wsfb_driver.c revision 3e8a0de0 
1/*
2 * Copyright © 2001-2012 Matthieu Herrb
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 *    - Redistributions of source code must retain the above copyright
10 *      notice, this list of conditions and the following disclaimer.
11 *    - Redistributions in binary form must reproduce the above
12 *      copyright notice, this list of conditions and the following
13 *      disclaimer in the documentation and/or other materials provided
14 *      with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
29 */
30
31/*
32 * Based on fbdev.c written by:
33 *
34 * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
35 *	     Michel Dänzer, <michdaen@iiic.ethz.ch>
36 */
37
38#ifdef HAVE_CONFIG_H
39#include "config.h"
40#endif
41
42#include <errno.h>
43#include <fcntl.h>
44#include <unistd.h>
45#include <sys/ioctl.h>
46#include <sys/types.h>
47#include <sys/mman.h>
48#include <sys/time.h>
49#include <errno.h>
50#include <dev/wscons/wsconsio.h>
51
52/* All drivers need this. */
53#include "xf86.h"
54#include "xf86_OSproc.h"
55#include "xf86_OSlib.h"
56
57#include "mipointer.h"
58#include "micmap.h"
59#include "colormapst.h"
60#include "xf86cmap.h"
61#include "shadow.h"
62#include "dgaproc.h"
63
64/* For visuals */
65#include "fb.h"
66
67#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6
68#include "xf86Resources.h"
69#include "xf86RAC.h"
70#endif
71
72#ifdef XvExtension
73#include "xf86xv.h"
74#endif
75
76#include "wsfb.h"
77
78/* #include "wsconsio.h" */
79
80#include <sys/mman.h>
81
82#ifdef X_PRIVSEP
83extern int priv_open_device(const char *);
84#else
85#define priv_open_device(n)    open(n,O_RDWR|O_NONBLOCK|O_EXCL)
86#endif
87
88#if defined(__NetBSD__)
89#define WSFB_DEFAULT_DEV "/dev/ttyE0"
90#else
91#define WSFB_DEFAULT_DEV "/dev/ttyC0"
92#endif
93
94#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) > 6
95#define xf86LoaderReqSymLists(...) do {} while (0)
96#define LoaderRefSymLists(...) do {} while (0)
97#define xf86LoaderReqSymbols(...) do {} while (0)
98#endif
99
100#define DEBUG 0
101
102#if DEBUG
103# define TRACE_ENTER(str)       ErrorF("wsfb: " str " %d\n",pScrn->scrnIndex)
104# define TRACE_EXIT(str)        ErrorF("wsfb: " str " done\n")
105# define TRACE(str)             ErrorF("wsfb trace: " str "\n")
106#else
107# define TRACE_ENTER(str)
108# define TRACE_EXIT(str)
109# define TRACE(str)
110#endif
111
112/* Prototypes */
113static pointer WsfbSetup(pointer, pointer, int *, int *);
114static Bool WsfbGetRec(ScrnInfoPtr);
115static void WsfbFreeRec(ScrnInfoPtr);
116static const OptionInfoRec * WsfbAvailableOptions(int, int);
117static void WsfbIdentify(int);
118static Bool WsfbProbe(DriverPtr, int);
119static Bool WsfbPreInit(ScrnInfoPtr, int);
120static Bool WsfbScreenInit(SCREEN_INIT_ARGS_DECL);
121static Bool WsfbCloseScreen(CLOSE_SCREEN_ARGS_DECL);
122static void *WsfbWindowLinear(ScreenPtr, CARD32, CARD32, int, CARD32 *,
123			      void *);
124#ifdef HAVE_SHADOW_AFB
125static void *WsfbWindowAfb(ScreenPtr, CARD32, CARD32, int, CARD32 *,
126			      void *);
127#endif
128static void WsfbPointerMoved(SCRN_ARG_TYPE, int, int);
129static Bool WsfbEnterVT(VT_FUNC_ARGS_DECL);
130static void WsfbLeaveVT(VT_FUNC_ARGS_DECL);
131static Bool WsfbSwitchMode(SWITCH_MODE_ARGS_DECL);
132static int WsfbValidMode(SCRN_ARG_TYPE, DisplayModePtr, Bool, int);
133static void WsfbLoadPalette(ScrnInfoPtr, int, int *, LOCO *, VisualPtr);
134static Bool WsfbSaveScreen(ScreenPtr, int);
135static void WsfbSave(ScrnInfoPtr);
136static void WsfbRestore(ScrnInfoPtr);
137
138/* DGA stuff */
139#ifdef XFreeXDGA
140static Bool WsfbDGAOpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
141				   int *, int *, int *);
142static Bool WsfbDGASetMode(ScrnInfoPtr, DGAModePtr);
143static void WsfbDGASetViewport(ScrnInfoPtr, int, int, int);
144static Bool WsfbDGAInit(ScrnInfoPtr, ScreenPtr);
145#endif
146
147static void WsfbShadowUpdateSwap32(ScreenPtr, shadowBufPtr);
148static void WsfbShadowUpdateSplit(ScreenPtr, shadowBufPtr);
149
150static Bool WsfbDriverFunc(ScrnInfoPtr, xorgDriverFuncOp, pointer);
151
152/* Helper functions */
153static int wsfb_open(const char *);
154static pointer wsfb_mmap(size_t, off_t, int);
155
156enum { WSFB_ROTATE_NONE = 0,
157       WSFB_ROTATE_CCW = 90,
158       WSFB_ROTATE_UD = 180,
159       WSFB_ROTATE_CW = 270
160};
161
162/*
163 * This is intentionally screen-independent.
164 * It indicates the binding choice made in the first PreInit.
165 */
166static int pix24bpp = 0;
167
168#define WSFB_VERSION 		4000
169#define WSFB_NAME		"wsfb"
170#define WSFB_DRIVER_NAME	"wsfb"
171
172_X_EXPORT DriverRec WSFB = {
173	WSFB_VERSION,
174	WSFB_DRIVER_NAME,
175	WsfbIdentify,
176	WsfbProbe,
177	WsfbAvailableOptions,
178	NULL,
179	0,
180	WsfbDriverFunc
181};
182
183/* Supported "chipsets" */
184static SymTabRec WsfbChipsets[] = {
185	{ 0, "wsfb" },
186	{ -1, NULL }
187};
188
189/* Supported options */
190typedef enum {
191	OPTION_SHADOW_FB,
192	OPTION_ROTATE,
193	OPTION_HW_CURSOR,
194	OPTION_SW_CURSOR
195} WsfbOpts;
196
197static const OptionInfoRec WsfbOptions[] = {
198	{ OPTION_SHADOW_FB, "ShadowFB", OPTV_BOOLEAN, {0}, FALSE},
199	{ OPTION_ROTATE, "Rotate", OPTV_STRING, {0}, FALSE},
200	{ OPTION_HW_CURSOR, "HWCursor", OPTV_BOOLEAN, {1}, FALSE},
201	{ -1, NULL, OPTV_NONE, {0}, FALSE}
202};
203
204#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) <= 6
205/* Symbols needed from other modules */
206static const char *fbSymbols[] = {
207	"fbPictureInit",
208	"fbScreenInit",
209	NULL
210};
211static const char *shadowSymbols[] = {
212	"shadowAdd",
213	"shadowSetup",
214	"shadowUpdatePacked",
215	"shadowUpdatePackedWeak",
216	"shadowUpdateRotatePacked",
217	"shadowUpdateRotatePackedWeak",
218#ifdef HAVE_SHADOW_AFB
219	"shadowUpdateAfb8",
220#endif
221	NULL
222};
223
224static const char *ramdacSymbols[] = {
225	"xf86CreateCursorInfoRec",
226	"xf86DestroyCursorInfoRec",
227	"xf86InitCursor",
228	NULL
229};
230#endif
231
232static XF86ModuleVersionInfo WsfbVersRec = {
233	"wsfb",
234	MODULEVENDORSTRING,
235	MODINFOSTRING1,
236	MODINFOSTRING2,
237	XORG_VERSION_CURRENT,
238	PACKAGE_VERSION_MAJOR,
239	PACKAGE_VERSION_MINOR,
240	PACKAGE_VERSION_PATCHLEVEL,
241	ABI_CLASS_VIDEODRV,
242	ABI_VIDEODRV_VERSION,
243	NULL,
244	{0, 0, 0, 0}
245};
246
247_X_EXPORT XF86ModuleData wsfbModuleData = { &WsfbVersRec, WsfbSetup, NULL };
248
249static pointer
250WsfbSetup(pointer module, pointer opts, int *errmaj, int *errmin)
251{
252	static Bool setupDone = FALSE;
253
254#if !(defined __NetBSD__ || defined __OpenBSD__)
255	/* Check that we're being loaded on a OpenBSD or NetBSD system. */
256	if (errmaj)
257		*errmaj = LDR_BADOS;
258	if (errmin)
259		*errmin = 0;
260	return NULL;
261#endif
262	if (!setupDone) {
263		setupDone = TRUE;
264		xf86AddDriver(&WSFB, module, HaveDriverFuncs);
265		LoaderRefSymLists(fbSymbols, shadowSymbols, ramdacSymbols,
266		    NULL);
267		return (pointer)1;
268	} else {
269		if (errmaj != NULL)
270			*errmaj = LDR_ONCEONLY;
271		return NULL;
272	}
273}
274
275static Bool
276WsfbGetRec(ScrnInfoPtr pScrn)
277{
278
279	if (pScrn->driverPrivate != NULL)
280		return TRUE;
281
282	pScrn->driverPrivate = xnfcalloc(sizeof(WsfbRec), 1);
283	return TRUE;
284}
285
286static void
287WsfbFreeRec(ScrnInfoPtr pScrn)
288{
289
290	if (pScrn->driverPrivate == NULL)
291		return;
292	free(pScrn->driverPrivate);
293	pScrn->driverPrivate = NULL;
294}
295
296static const OptionInfoRec *
297WsfbAvailableOptions(int chipid, int busid)
298{
299	return WsfbOptions;
300}
301
302static void
303WsfbIdentify(int flags)
304{
305	xf86PrintChipsets(WSFB_NAME, "driver for wsdisplay framebuffer",
306			  WsfbChipsets);
307}
308
309/* Open the framebuffer device. */
310static int
311wsfb_open(const char *dev)
312{
313	int fd = -1;
314
315	/* Try argument from xorg.conf first. */
316	if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
317		/* Second: environment variable. */
318		dev = getenv("XDEVICE");
319		if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
320			/* Last try: default device. */
321			dev = WSFB_DEFAULT_DEV;
322			if ((fd = priv_open_device(dev)) == -1) {
323				return -1;
324			}
325		}
326	}
327	return fd;
328}
329
330/* Map the framebuffer's memory. */
331static pointer
332wsfb_mmap(size_t len, off_t off, int fd)
333{
334	int pagemask, mapsize;
335	caddr_t addr;
336	pointer mapaddr;
337
338	pagemask = getpagesize() - 1;
339	mapsize = ((int) len + pagemask) & ~pagemask;
340	addr = 0;
341
342	/*
343	 * Try and make it private first, that way once we get it, an
344	 * interloper, e.g. another server, can't get this frame buffer,
345	 * and if another server already has it, this one won't.
346	 */
347	mapaddr = (pointer) mmap(addr, mapsize,
348				 PROT_READ | PROT_WRITE, MAP_SHARED,
349				 fd, off);
350	if (mapaddr == MAP_FAILED) {
351		mapaddr = NULL;
352	}
353#if DEBUG
354	ErrorF("mmap returns: addr %p len 0x%x\n", mapaddr, mapsize);
355#endif
356	return mapaddr;
357}
358
359static Bool
360WsfbProbe(DriverPtr drv, int flags)
361{
362	int i, fd, entity;
363       	GDevPtr *devSections;
364	int numDevSections;
365	const char *dev;
366	Bool foundScreen = FALSE;
367
368	TRACE("probe start");
369
370	/* For now, just bail out for PROBE_DETECT. */
371	if (flags & PROBE_DETECT)
372		return FALSE;
373
374	if ((numDevSections = xf86MatchDevice(WSFB_DRIVER_NAME,
375					      &devSections)) <= 0)
376		return FALSE;
377
378	/* Do not attach if the modesetting driver is active */
379	if (fbSlotClaimed == TRUE) {
380		DriverPtr fbSlotDrv = xf86GetEntityInfo(0)->driver;
381		if (strcmp(fbSlotDrv->driverName, "modesetting") == 0)
382			return FALSE;
383	}
384
385	for (i = 0; i < numDevSections; i++) {
386		ScrnInfoPtr pScrn = NULL;
387
388		dev = xf86FindOptionValue(devSections[i]->options, "device");
389		if ((fd = wsfb_open(dev)) >= 0) {
390			entity = xf86ClaimFbSlot(drv, 0, devSections[i], TRUE);
391			pScrn = xf86ConfigFbEntity(NULL,0,entity,
392						   NULL,NULL,NULL,NULL);
393			if (pScrn != NULL) {
394				foundScreen = TRUE;
395				pScrn->driverVersion = WSFB_VERSION;
396				pScrn->driverName = WSFB_DRIVER_NAME;
397				pScrn->name = WSFB_NAME;
398				pScrn->Probe = WsfbProbe;
399				pScrn->PreInit = WsfbPreInit;
400				pScrn->ScreenInit = WsfbScreenInit;
401				pScrn->SwitchMode = WsfbSwitchMode;
402				pScrn->AdjustFrame = NULL;
403				pScrn->EnterVT = WsfbEnterVT;
404				pScrn->LeaveVT = WsfbLeaveVT;
405				pScrn->ValidMode = WsfbValidMode;
406
407				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
408				    "using %s\n", dev != NULL ? dev :
409				    "default device");
410			}
411		}
412	}
413	free(devSections);
414	TRACE("probe done");
415	return foundScreen;
416}
417
418static Bool
419WsfbPreInit(ScrnInfoPtr pScrn, int flags)
420{
421	WsfbPtr fPtr;
422	int default_depth, bitsperpixel, wstype;
423	const char *dev, *s;
424	char *mod = NULL;
425	const char *reqSym = NULL;
426	Gamma zeros = {0.0, 0.0, 0.0};
427	DisplayModePtr mode;
428	MessageType from;
429
430	if (flags & PROBE_DETECT) return FALSE;
431
432	TRACE_ENTER("PreInit");
433
434	if (pScrn->numEntities != 1) return FALSE;
435
436	pScrn->monitor = pScrn->confScreen->monitor;
437
438	WsfbGetRec(pScrn);
439	fPtr = WSFBPTR(pScrn);
440
441	fPtr->pEnt = xf86GetEntityInfo(pScrn->entityList[0]);
442
443#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6
444	pScrn->racMemFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;
445	pScrn->racIoFlags = pScrn->racMemFlags;
446#endif
447
448	dev = xf86FindOptionValue(fPtr->pEnt->device->options, "device");
449	fPtr->fd = wsfb_open(dev);
450	if (fPtr->fd == -1) {
451		return FALSE;
452	}
453
454	if (ioctl(fPtr->fd, WSDISPLAYIO_GTYPE, &wstype) == -1) {
455		xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
456			   "ioctl WSDISPLAY_GTYPE: %s\n",
457			   strerror(errno));
458		wstype = WSDISPLAY_TYPE_UNKNOWN;
459	}
460
461	if (ioctl(fPtr->fd, WSDISPLAYIO_GET_FBINFO, &fPtr->fbi) != 0) {
462		struct wsdisplay_fbinfo info;
463		struct wsdisplayio_fbinfo *fbi = &fPtr->fbi;
464		int lb;
465
466		xf86Msg(X_WARNING, "ioctl(WSDISPLAYIO_GET_FBINFO) failed, " \
467			"falling back to old method\n");
468		if (ioctl(fPtr->fd, WSDISPLAYIO_GINFO, &info) == -1) {
469			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
470				   "ioctl WSDISPLAY_GINFO: %s\n",
471				   strerror(errno));
472			return FALSE;
473		}
474		if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, &lb) == -1) {
475			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
476				   "ioctl WSDISPLAYIO_LINEBYTES: %s\n",
477				   strerror(errno));
478			return FALSE;
479		}
480		/* ok, fake up a new style fbinfo */
481		fbi->fbi_width = info.width;
482		fbi->fbi_height = info.height;
483		fbi->fbi_stride = lb;
484		fbi->fbi_bitsperpixel = info.depth;
485		if (info.depth > 16) {
486			fbi->fbi_pixeltype = WSFB_RGB;
487			if (wstype == WSDISPLAY_TYPE_SUN24 ||
488			    wstype == WSDISPLAY_TYPE_SUNCG12 ||
489			    wstype == WSDISPLAY_TYPE_SUNCG14 ||
490			    wstype == WSDISPLAY_TYPE_SUNTCX ||
491			    wstype == WSDISPLAY_TYPE_SUNFFB ||
492			    wstype == WSDISPLAY_TYPE_XVR1000 ||
493			    wstype == WSDISPLAY_TYPE_VC4) {
494				fbi->fbi_subtype.fbi_rgbmasks.red_offset = 0;
495				fbi->fbi_subtype.fbi_rgbmasks.red_size = 8;
496				fbi->fbi_subtype.fbi_rgbmasks.green_offset = 8;
497				fbi->fbi_subtype.fbi_rgbmasks.green_size = 8;
498				fbi->fbi_subtype.fbi_rgbmasks.blue_offset = 16;
499				fbi->fbi_subtype.fbi_rgbmasks.blue_size = 8;
500			} else {
501				fbi->fbi_subtype.fbi_rgbmasks.red_offset = 16;
502				fbi->fbi_subtype.fbi_rgbmasks.red_size = 8;
503				fbi->fbi_subtype.fbi_rgbmasks.green_offset = 8;
504				fbi->fbi_subtype.fbi_rgbmasks.green_size = 8;
505				fbi->fbi_subtype.fbi_rgbmasks.blue_offset = 0;
506				fbi->fbi_subtype.fbi_rgbmasks.blue_size = 8;
507			}
508			fbi->fbi_subtype.fbi_rgbmasks.alpha_offset = 0;
509			fbi->fbi_subtype.fbi_rgbmasks.alpha_size = 0;
510		} else if (info.depth <= 8) {
511			fbi->fbi_pixeltype = WSFB_CI;
512			fbi->fbi_subtype.fbi_cmapinfo.cmap_entries = info.cmsize;
513		}
514		fbi->fbi_flags = 0;
515		fbi->fbi_fbsize = lb * info.height;
516#ifdef	WSDISPLAY_TYPE_LUNA
517		if (wstype == WSDISPLAY_TYPE_LUNA) {
518			/*
519			 * XXX
520			 * LUNA's FB seems to have 64 dot (8 byte) offset.
521			 * This might be able to be changed in kernel
522			 * lunafb driver, but current setting was pulled
523			 * from 4.4BSD-Lite2/luna68k.
524			 */
525			fbi->fbi_fboffset = 8;
526		} else
527#endif
528			fbi->fbi_fboffset = 0;
529	}
530	xf86Msg(X_INFO, "fboffset %x\n", (int)fPtr->fbi.fbi_fboffset);
531	/*
532	 * Allocate room for saving the colormap.
533	 */
534	if (fPtr->fbi.fbi_pixeltype == WSFB_CI &&
535	    fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries > 0) {
536		fPtr->saved_cmap.red =
537		    (unsigned char *)malloc(fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries);
538		if (fPtr->saved_cmap.red == NULL) {
539			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
540			    "Cannot malloc %d bytes\n",
541			    fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries);
542			return FALSE;
543		}
544		fPtr->saved_cmap.green =
545		    (unsigned char *)malloc(fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries);
546		if (fPtr->saved_cmap.green == NULL) {
547			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
548			    "Cannot malloc %d bytes\n",
549			    fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries);
550			free(fPtr->saved_cmap.red);
551			return FALSE;
552		}
553		fPtr->saved_cmap.blue =
554		    (unsigned char *)malloc(fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries);
555		if (fPtr->saved_cmap.blue == NULL) {
556			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
557			    "Cannot malloc %d bytes\n",
558			    fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries);
559			free(fPtr->saved_cmap.red);
560			free(fPtr->saved_cmap.green);
561			return FALSE;
562		}
563	}
564
565	/* Handle depth */
566	default_depth = fPtr->fbi.fbi_bitsperpixel <= 24 ? fPtr->fbi.fbi_bitsperpixel : 24;
567	bitsperpixel = fPtr->fbi.fbi_bitsperpixel == 15 ? 16 : fPtr->fbi.fbi_bitsperpixel;
568#if defined(__NetBSD__) && defined(WSDISPLAY_TYPE_LUNA)
569	if (wstype == WSDISPLAY_TYPE_LUNA) {
570		/*
571		 * XXX
572		 * LUNA's color framebuffers support 4bpp or 8bpp
573		 * but they have multiple 1bpp VRAM planes like ancient VGA.
574		 * For now, Xorg server supports only the first one plane
575		 * as 1bpp monochrome server.
576		 *
577		 * Note OpenBSD/luna88k workarounds this by switching depth
578		 * and palette settings by WSDISPLAYIO_SETGFXMODE ioctl.
579		 */
580		default_depth = 1;
581		bitsperpixel = 1;
582	}
583#endif
584#ifdef WSDISPLAY_TYPE_AMIGACC
585	if (wstype == WSDISPLAY_TYPE_AMIGACC) {
586		/*
587		 * Video memory is organized in bitplanes.
588		 * 8bpp or 1bpp supported in this driver.
589		 * With 8bpp conversion to bitplane format
590		 * is done in shadow update proc.
591		 * With 1bpp no conversion needed.
592		 */
593#ifdef HAVE_SHADOW_AFB
594		if (bitsperpixel == 8) {
595			fPtr->planarAfb = TRUE;
596		} else
597#endif
598		{
599			default_depth = 1;
600			bitsperpixel = 1;
601		}
602	}
603#endif
604
605	if (!xf86SetDepthBpp(pScrn, default_depth, default_depth,
606		bitsperpixel,
607		bitsperpixel >= 24 ? Support24bppFb|Support32bppFb : 0))
608		return FALSE;
609
610	/* Check consistency. */
611	if (pScrn->bitsPerPixel != bitsperpixel) {
612		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
613		    "specified depth (%d) or bpp (%d) doesn't match "
614		    "framebuffer depth (%d)\n", pScrn->depth,
615		    pScrn->bitsPerPixel, bitsperpixel);
616		return FALSE;
617	}
618	xf86PrintDepthBpp(pScrn);
619
620	/* Get the depth24 pixmap format. */
621	if (pScrn->depth == 24 && pix24bpp == 0)
622		pix24bpp = xf86GetBppFromDepth(pScrn, 24);
623
624	/* Handle options. */
625	xf86CollectOptions(pScrn, NULL);
626	fPtr->Options = (OptionInfoRec *)malloc(sizeof(WsfbOptions));
627	if (fPtr->Options == NULL)
628		return FALSE;
629	memcpy(fPtr->Options, WsfbOptions, sizeof(WsfbOptions));
630	xf86ProcessOptions(pScrn->scrnIndex, fPtr->pEnt->device->options,
631			   fPtr->Options);
632
633	/* Use shadow framebuffer by default, on depth >= 8 */
634	xf86Msg(X_INFO, "fbi_flags: %x\n", fPtr->fbi.fbi_flags);
635	if ((pScrn->depth >= 8) &&
636	   ((fPtr->fbi.fbi_flags & WSFB_VRAM_IS_RAM) == 0)) {
637		fPtr->shadowFB = xf86ReturnOptValBool(fPtr->Options,
638						      OPTION_SHADOW_FB, TRUE);
639	} else
640		if (xf86ReturnOptValBool(fPtr->Options,
641					 OPTION_SHADOW_FB, FALSE)) {
642			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
643				   "Shadow FB option ignored on depth < 8\n");
644		}
645	if (fPtr->fbi.fbi_flags & WSFB_VRAM_IS_SPLIT) {
646		if (!fPtr->shadowFB) {
647			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
648				   "Shadow FB forced on for split framebuffer\n");
649			fPtr->shadowFB = TRUE;
650		}
651	}
652	/* Rotation */
653	fPtr->rotate = WSFB_ROTATE_NONE;
654	if ((s = xf86GetOptValString(fPtr->Options, OPTION_ROTATE))) {
655		if (pScrn->depth >= 8) {
656			if (!xf86NameCmp(s, "CW")) {
657				fPtr->shadowFB = TRUE;
658				fPtr->rotate = WSFB_ROTATE_CW;
659				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
660				    "Rotating screen clockwise\n");
661			} else if (!xf86NameCmp(s, "CCW")) {
662				fPtr->shadowFB = TRUE;
663				fPtr->rotate = WSFB_ROTATE_CCW;
664				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
665				    "Rotating screen counter clockwise\n");
666			} else if (!xf86NameCmp(s, "UD")) {
667				fPtr->shadowFB = TRUE;
668				fPtr->rotate = WSFB_ROTATE_UD;
669				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
670				    "Rotating screen upside down\n");
671			} else {
672				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
673				    "\"%s\" is not a valid value for Option "
674				    "\"Rotate\"\n", s);
675				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
676				    "Valid options are \"CW\", \"CCW\","
677				    " or \"UD\"\n");
678			}
679		} else {
680			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
681			    "Option \"Rotate\" ignored on depth < 8\n");
682		}
683	}
684
685
686	fPtr->useSwap32 = FALSE;
687	/* Color weight */
688	if (fPtr->fbi.fbi_pixeltype == WSFB_RGB) {
689		rgb zeros = { 0, 0, 0 }, masks;
690
691		if (fPtr->fbi.fbi_subtype.fbi_rgbmasks.red_size > 0) {
692			uint32_t msk;
693
694			/*
695			 * see if we need to byte-swap pixels
696			 * XXX this requires a shadow FB and is incompatible
697			 * (for now ) with rotation
698			 */
699			if ((fPtr->fbi.fbi_bitsperpixel == 32) &&
700			    (fPtr->fbi.fbi_subtype.fbi_rgbmasks.blue_offset == 24) &&
701			    (fPtr->rotate == WSFB_ROTATE_NONE) &&
702			    (fPtr->shadowFB == TRUE)) {
703			    	/*
704			    	 * looks like BGRA - set the swap flag and flip
705			    	 * the offsets
706			    	 */
707			    	xf86Msg(X_INFO, "endian-flipped RGB framebuffer "
708			    			"detected, using WsfbShadowUpdateSwap32()\n");
709			    	fPtr->fbi.fbi_subtype.fbi_rgbmasks.blue_offset = 0;
710			    	fPtr->fbi.fbi_subtype.fbi_rgbmasks.green_offset = 8;
711			    	fPtr->fbi.fbi_subtype.fbi_rgbmasks.red_offset = 16;
712			    	fPtr->fbi.fbi_subtype.fbi_rgbmasks.alpha_offset = 24;
713				fPtr->useSwap32 = TRUE;
714			}
715
716			msk = 0xffffffff;
717			msk = msk << fPtr->fbi.fbi_subtype.fbi_rgbmasks.red_size;
718			msk = ~msk;
719			masks.red = msk << fPtr->fbi.fbi_subtype.fbi_rgbmasks.red_offset;
720
721			msk = 0xffffffff;
722			msk = msk << fPtr->fbi.fbi_subtype.fbi_rgbmasks.green_size;
723			msk = ~msk;
724			masks.green = msk << fPtr->fbi.fbi_subtype.fbi_rgbmasks.green_offset;
725
726			msk = 0xffffffff;
727			msk = msk << fPtr->fbi.fbi_subtype.fbi_rgbmasks.blue_size;
728			msk = ~msk;
729			masks.blue = msk << fPtr->fbi.fbi_subtype.fbi_rgbmasks.blue_offset;
730			xf86Msg(X_INFO, "masks generated: %08lx %08lx %08lx\n",
731			    (unsigned long)masks.red,
732			    (unsigned long)masks.green,
733			    (unsigned long)masks.blue);
734		} else {
735			masks.red = 0;
736			masks.green = 0;
737			masks.blue = 0;
738		}
739
740		if (!xf86SetWeight(pScrn, zeros, masks))
741			return FALSE;
742	}
743
744	/* Visual init */
745	if (!xf86SetDefaultVisual(pScrn, -1))
746		return FALSE;
747
748	/* We don't currently support DirectColor at > 8bpp . */
749	if (pScrn->depth > 8 && pScrn->defaultVisual != TrueColor) {
750		xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
751			   " (%s) is not supported at depth %d\n",
752			   xf86GetVisualName(pScrn->defaultVisual),
753			   pScrn->depth);
754		return FALSE;
755	}
756
757	xf86SetGamma(pScrn,zeros);
758
759	pScrn->progClock = TRUE;
760	pScrn->rgbBits   = (pScrn->depth >= 8) ? 8 : pScrn->depth;
761	pScrn->chipset   = "wsfb";
762	pScrn->videoRam  = fPtr->fbi.fbi_fbsize;
763
764	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Vidmem: %dk\n",
765		   pScrn->videoRam/1024);
766
767	/* Fake video mode struct. */
768	mode = (DisplayModePtr)malloc(sizeof(DisplayModeRec));
769	mode->prev = mode;
770	mode->next = mode;
771	mode->name = "wsfb current mode";
772	mode->status = MODE_OK;
773	mode->type = M_T_BUILTIN;
774	mode->Clock = 0;
775	mode->HDisplay = fPtr->fbi.fbi_width;
776	mode->HSyncStart = 0;
777	mode->HSyncEnd = 0;
778	mode->HTotal = 0;
779	mode->HSkew = 0;
780	mode->VDisplay = fPtr->fbi.fbi_height;
781	mode->VSyncStart = 0;
782	mode->VSyncEnd = 0;
783	mode->VTotal = 0;
784	mode->VScan = 0;
785	mode->Flags = 0;
786	if (pScrn->modes != NULL) {
787		xf86DrvMsg(pScrn->scrnIndex, X_INFO,
788		   "Ignoring mode specification from screen section\n");
789	}
790	pScrn->currentMode = pScrn->modes = mode;
791	pScrn->virtualX = fPtr->fbi.fbi_width;
792	pScrn->virtualY = fPtr->fbi.fbi_height;
793	pScrn->displayWidth = pScrn->virtualX;
794
795	/* Set the display resolution. */
796	xf86SetDpi(pScrn, 0, 0);
797
798	from = X_DEFAULT;
799	fPtr->HWCursor = TRUE;
800	if (xf86GetOptValBool(fPtr->Options, OPTION_HW_CURSOR, &fPtr->HWCursor))
801		from = X_CONFIG;
802	if (xf86ReturnOptValBool(fPtr->Options, OPTION_SW_CURSOR, FALSE)) {
803		from = X_CONFIG;
804		fPtr->HWCursor = FALSE;
805	}
806	xf86DrvMsg(pScrn->scrnIndex, from, "Using %s cursor\n",
807		fPtr->HWCursor ? "HW" : "SW");
808
809	/* Load bpp-specific modules. */
810	switch(pScrn->bitsPerPixel) {
811	case 1:
812	case 4:
813	default:
814		mod = "fb";
815		break;
816	}
817
818
819	/* Load shadow if needed. */
820	if (fPtr->shadowFB) {
821		xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
822			   "Using \"Shadow Framebuffer\"\n");
823		if (xf86LoadSubModule(pScrn, "shadow") == NULL) {
824			WsfbFreeRec(pScrn);
825			return FALSE;
826		}
827	}
828
829	if (mod && xf86LoadSubModule(pScrn, mod) == NULL) {
830		WsfbFreeRec(pScrn);
831		return FALSE;
832	}
833
834	if (xf86LoadSubModule(pScrn, "ramdac") == NULL) {
835		WsfbFreeRec(pScrn);
836		return FALSE;
837        }
838
839	if (mod) {
840		if (reqSym) {
841			xf86LoaderReqSymbols(reqSym, NULL);
842		} else {
843			xf86LoaderReqSymLists(fbSymbols, NULL);
844		}
845	}
846	TRACE_EXIT("PreInit");
847	return TRUE;
848}
849
850static Bool
851WsfbCreateScreenResources(ScreenPtr pScreen)
852{
853	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
854	WsfbPtr fPtr = WSFBPTR(pScrn);
855	PixmapPtr pPixmap;
856	Bool ret;
857	void (*shadowproc)(ScreenPtr, shadowBufPtr);
858	ShadowWindowProc windowproc = WsfbWindowLinear;
859
860	pScreen->CreateScreenResources = fPtr->CreateScreenResources;
861	ret = pScreen->CreateScreenResources(pScreen);
862	pScreen->CreateScreenResources = WsfbCreateScreenResources;
863
864	if (!ret)
865		return FALSE;
866
867	pPixmap = pScreen->GetScreenPixmap(pScreen);
868	if (fPtr->fbi.fbi_flags & WSFB_VRAM_IS_SPLIT) {
869		shadowproc = WsfbShadowUpdateSplit;
870	} else if (fPtr->useSwap32) {
871		shadowproc = WsfbShadowUpdateSwap32;
872	} else if (fPtr->rotate) {
873		shadowproc = shadowUpdateRotatePacked;
874	} else
875#ifdef HAVE_SHADOW_AFB
876	if (fPtr->planarAfb) {
877		shadowproc = shadowUpdateAfb8;
878		windowproc = WsfbWindowAfb;
879	} else
880#endif
881	{
882		shadowproc = shadowUpdatePacked;
883	}
884
885	if (!shadowAdd(pScreen, pPixmap, shadowproc,
886		windowproc, fPtr->rotate, NULL)) {
887		return FALSE;
888	}
889	return TRUE;
890}
891
892
893static Bool
894WsfbShadowInit(ScreenPtr pScreen)
895{
896	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
897	WsfbPtr fPtr = WSFBPTR(pScrn);
898
899	if (!shadowSetup(pScreen))
900		return FALSE;
901	fPtr->CreateScreenResources = pScreen->CreateScreenResources;
902	pScreen->CreateScreenResources = WsfbCreateScreenResources;
903
904	return TRUE;
905}
906
907static Bool
908WsfbScreenInit(SCREEN_INIT_ARGS_DECL)
909{
910	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
911	WsfbPtr fPtr = WSFBPTR(pScrn);
912	VisualPtr visual;
913	int ret, flags, ncolors;
914	int wsmode = WSDISPLAYIO_MODE_DUMBFB;
915	int wstype;
916	int width;
917	size_t len;
918
919	TRACE_ENTER("WsfbScreenInit");
920#if DEBUG
921	ErrorF("\tbitsPerPixel=%d, depth=%d, defaultVisual=%s\n"
922	       "\tmask: %x,%x,%x, offset: %u,%u,%u\n",
923	       pScrn->bitsPerPixel,
924	       pScrn->depth,
925	       xf86GetVisualName(pScrn->defaultVisual),
926	       pScrn->mask.red,pScrn->mask.green,pScrn->mask.blue,
927	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);
928#endif
929	switch (fPtr->fbi.fbi_bitsperpixel) {
930	case 1:
931	case 4:
932	case 8:
933		len = fPtr->fbi.fbi_stride * fPtr->fbi.fbi_height;
934#ifdef HAVE_SHADOW_AFB
935		if (fPtr->planarAfb) {
936			/*
937			 * stride is "bytes per line" for each plane so
938			 * we need a number of planes to mmap in planar case.
939			 */
940			len *= fPtr->fbi.fbi_bitsperpixel;
941		}
942#endif
943
944		break;
945	case 15:
946	case 16:
947		if (fPtr->fbi.fbi_stride == fPtr->fbi.fbi_width) {
948			xf86Msg(X_ERROR, "Bogus stride == width in 16bit colour\n");
949			len = fPtr->fbi.fbi_width * fPtr->fbi.fbi_height * sizeof(short);
950		} else {
951			len = fPtr->fbi.fbi_stride * fPtr->fbi.fbi_height;
952		}
953		break;
954	case 24:
955		if (fPtr->fbi.fbi_stride == fPtr->fbi.fbi_width) {
956			xf86Msg(X_ERROR, "Bogus stride == width in 24bit colour\n");
957			len = fPtr->fbi.fbi_width * fPtr->fbi.fbi_height * 3;
958		} else {
959			len = fPtr->fbi.fbi_stride * fPtr->fbi.fbi_height;
960		}
961		break;
962	case 32:
963		if (fPtr->fbi.fbi_stride == fPtr->fbi.fbi_width) {
964			xf86Msg(X_ERROR, "Bogus stride == width in 32bit colour\n");
965			len = fPtr->fbi.fbi_width * fPtr->fbi.fbi_height * sizeof(int);
966		} else {
967			len = fPtr->fbi.fbi_stride * fPtr->fbi.fbi_height;
968		}
969		break;
970	default:
971		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
972			   "unsupported depth %d\n", fPtr->fbi.fbi_bitsperpixel);
973		return FALSE;
974	}
975	/* Switch to graphics mode - required before mmap. */
976	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &wsmode) == -1) {
977		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
978			   "ioctl WSDISPLAYIO_SMODE: %s\n",
979			   strerror(errno));
980		return FALSE;
981	}
982	/* Get wsdisplay type to handle quirks */
983	if (ioctl(fPtr->fd, WSDISPLAYIO_GTYPE, &wstype) == -1) {
984		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
985			   "ioctl WSDISPLAY_GTYPE: %s\n",
986			   strerror(errno));
987		return FALSE;
988	}
989	len = max(len, fPtr->fbi.fbi_fbsize);
990	fPtr->fbmem = wsfb_mmap(len + fPtr->fbi.fbi_fboffset, 0, fPtr->fd);
991
992	if (fPtr->fbmem == NULL) {
993		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
994			   "wsfb_mmap: %s\n", strerror(errno));
995		return FALSE;
996	}
997	fPtr->fbmem_len = len;
998
999	WsfbSave(pScrn);
1000	pScrn->vtSema = TRUE;
1001
1002	/* MI layer */
1003	miClearVisualTypes();
1004	if (pScrn->bitsPerPixel > 8) {
1005		if (!miSetVisualTypes(pScrn->depth, TrueColorMask,
1006				      pScrn->rgbBits, TrueColor))
1007			return FALSE;
1008	} else {
1009		if (!miSetVisualTypes(pScrn->depth,
1010				      miGetDefaultVisualMask(pScrn->depth),
1011				      pScrn->rgbBits, pScrn->defaultVisual))
1012			return FALSE;
1013	}
1014	if (!miSetPixmapDepths())
1015		return FALSE;
1016
1017	if (fPtr->rotate == WSFB_ROTATE_CW
1018	    || fPtr->rotate == WSFB_ROTATE_CCW) {
1019		int tmp = pScrn->virtualX;
1020		pScrn->virtualX = pScrn->displayWidth = pScrn->virtualY;
1021		pScrn->virtualY = tmp;
1022	}
1023	if (fPtr->rotate && !fPtr->PointerMoved) {
1024		fPtr->PointerMoved = pScrn->PointerMoved;
1025		pScrn->PointerMoved = WsfbPointerMoved;
1026	}
1027
1028	fPtr->fbstart = fPtr->fbmem + fPtr->fbi.fbi_fboffset;
1029
1030	if (fPtr->shadowFB) {
1031		if (fPtr->rotate) {
1032			/*
1033			 * Note Rotate and Shadow FB options are valid
1034			 * only on depth >= 8.
1035			 */
1036			len = pScrn->virtualX * pScrn->virtualY *
1037			    (pScrn->bitsPerPixel >> 3);
1038		} else
1039#ifdef HAVE_SHADOW_AFB
1040		if (fPtr->planarAfb) {
1041			/* always 8bpp */
1042			len = pScrn->virtualX * pScrn->virtualY;
1043		} else
1044#endif
1045		{
1046			len = fPtr->fbi.fbi_stride * pScrn->virtualY;
1047		}
1048		fPtr->shadow = calloc(1, len);
1049
1050		if (!fPtr->shadow) {
1051			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1052			    "Failed to allocate shadow framebuffer\n");
1053			return FALSE;
1054		}
1055	}
1056
1057	/*
1058	 * fbScreenInit() seems to require "pixel width of frame buffer"
1059	 * but it is actually "stride in pixel" of frame buffer,
1060	 * per xorg/xserver/tree/fb/fbscreen.c.
1061	 */
1062	if (fPtr->rotate) {
1063		width = pScrn->displayWidth;
1064	} else
1065#ifdef HAVE_SHADOW_AFB
1066	if (fPtr->planarAfb) {
1067		width = pScrn->displayWidth;
1068	} else
1069#endif
1070	{
1071		if (pScrn->bitsPerPixel > 8) {
1072			width =
1073			    fPtr->fbi.fbi_stride / (pScrn->bitsPerPixel >> 3);
1074		} else {
1075			width =
1076			    fPtr->fbi.fbi_stride * (8 / pScrn->bitsPerPixel);
1077		}
1078	}
1079	switch (pScrn->bitsPerPixel) {
1080	case 1:
1081		ret = fbScreenInit(pScreen,
1082		    fPtr->fbstart,
1083		    pScrn->virtualX, pScrn->virtualY,
1084		    pScrn->xDpi, pScrn->yDpi,
1085		    width, pScrn->bitsPerPixel);
1086		break;
1087	case 4:
1088	case 8:
1089	case 16:
1090	case 24:
1091	case 32:
1092		ret = fbScreenInit(pScreen,
1093		    fPtr->shadowFB ? fPtr->shadow : fPtr->fbstart,
1094		    pScrn->virtualX, pScrn->virtualY,
1095		    pScrn->xDpi, pScrn->yDpi,
1096		    width,
1097		    pScrn->bitsPerPixel);
1098		break;
1099	default:
1100		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1101			   "Unsupported bpp: %d\n", pScrn->bitsPerPixel);
1102		return FALSE;
1103	} /* case */
1104
1105	if (!ret)
1106		return FALSE;
1107
1108	if (pScrn->bitsPerPixel > 8) {
1109		/* Fixup RGB ordering. */
1110		visual = pScreen->visuals + pScreen->numVisuals;
1111		while (--visual >= pScreen->visuals) {
1112			if ((visual->class | DynamicClass) == DirectColor) {
1113				visual->offsetRed   = pScrn->offset.red;
1114				visual->offsetGreen = pScrn->offset.green;
1115				visual->offsetBlue  = pScrn->offset.blue;
1116				visual->redMask     = pScrn->mask.red;
1117				visual->greenMask   = pScrn->mask.green;
1118				visual->blueMask    = pScrn->mask.blue;
1119			}
1120		}
1121	}
1122
1123	if (pScrn->bitsPerPixel >= 8) {
1124		if (!fbPictureInit(pScreen, NULL, 0))
1125			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
1126				   "RENDER extension initialisation failed.\n");
1127	}
1128	if (fPtr->shadowFB && !WsfbShadowInit(pScreen)) {
1129		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1130		    "shadow framebuffer initialization failed\n");
1131		return FALSE;
1132	}
1133
1134#ifdef XFreeXDGA
1135	if (!fPtr->rotate)
1136		WsfbDGAInit(pScrn, pScreen);
1137	else
1138		xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Rotated display, "
1139		    "disabling DGA\n");
1140#endif
1141	if (fPtr->rotate) {
1142		xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Enabling Driver Rotation, "
1143		    "disabling RandR\n");
1144#if 0
1145		xf86DisableRandR();
1146#endif
1147		if (pScrn->bitsPerPixel == 24)
1148			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
1149			    "Rotation might be broken in 24 bpp\n");
1150	}
1151
1152	xf86SetBlackWhitePixels(pScreen);
1153	xf86SetBackingStore(pScreen);
1154
1155	/* Software cursor. */
1156	miDCInitialize(pScreen, xf86GetPointerScreenFuncs());
1157
1158	/* check for hardware cursor support */
1159	if (fPtr->HWCursor)
1160		WsfbSetupCursor(pScreen);
1161
1162	/*
1163	 * Colormap
1164	 *
1165	 * Note that, even on less than 8 bit depth frame buffers, we
1166	 * expect the colormap to be programmable with 8 bit values.
1167	 * As of now, this is indeed the case on all OpenBSD supported
1168	 * graphics hardware.
1169	 */
1170	if (!miCreateDefColormap(pScreen))
1171		return FALSE;
1172	flags = CMAP_RELOAD_ON_MODE_SWITCH;
1173
1174	ncolors = 0;
1175	if (fPtr->fbi.fbi_pixeltype == WSFB_CI) {
1176		ncolors = fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries;
1177	}
1178
1179	/* On StaticGray visuals, fake a 256 entries colormap. */
1180	if (ncolors == 0)
1181		ncolors = 256;
1182
1183	if(!xf86HandleColormaps(pScreen, ncolors, 8, WsfbLoadPalette,
1184				NULL, flags))
1185		return FALSE;
1186
1187#if defined(__NetBSD__) && defined(WSDISPLAY_TYPE_LUNA)
1188	if (wstype == WSDISPLAY_TYPE_LUNA) {
1189		ncolors = fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries;
1190		if (ncolors > 0) {
1191			/*
1192			 * Override palette to use 4bpp/8bpp framebuffers as
1193			 * monochrome server by using only the first plane.
1194			 * See also comment in WsfbPreInit().
1195			 */
1196			struct wsdisplay_cmap cmap;
1197			uint8_t r[256], g[256], b[256];
1198			int p;
1199
1200			for (p = 0; p < ncolors; p++)
1201				r[p] = g[p] = b[p] = (p & 1) ? 0xff : 0;
1202			cmap.index = 0;
1203			cmap.count = ncolors;
1204			cmap.red   = r;
1205			cmap.green = g;
1206			cmap.blue  = b;
1207			if (ioctl(fPtr->fd, WSDISPLAYIO_PUTCMAP, &cmap) == -1) {
1208				xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1209				   "ioctl WSDISPLAYIO_PUTCMAP: %s\n",
1210				   strerror(errno));
1211			}
1212		}
1213	}
1214#endif
1215
1216	pScreen->SaveScreen = WsfbSaveScreen;
1217
1218#ifdef XvExtension
1219	{
1220		XF86VideoAdaptorPtr *ptr;
1221
1222		int n = xf86XVListGenericAdaptors(pScrn,&ptr);
1223		if (n) {
1224			xf86XVScreenInit(pScreen,ptr,n);
1225		}
1226	}
1227#endif
1228
1229	/* Wrap the current CloseScreen function. */
1230	fPtr->CloseScreen = pScreen->CloseScreen;
1231	pScreen->CloseScreen = WsfbCloseScreen;
1232
1233	TRACE_EXIT("WsfbScreenInit");
1234	return TRUE;
1235}
1236
1237static Bool
1238WsfbCloseScreen(CLOSE_SCREEN_ARGS_DECL)
1239{
1240	ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
1241	PixmapPtr pPixmap;
1242	WsfbPtr fPtr = WSFBPTR(pScrn);
1243
1244
1245	TRACE_ENTER("WsfbCloseScreen");
1246
1247	pPixmap = pScreen->GetScreenPixmap(pScreen);
1248	if (fPtr->shadowFB)
1249		shadowRemove(pScreen, pPixmap);
1250
1251	if (pScrn->vtSema) {
1252		WsfbRestore(pScrn);
1253		if (munmap(fPtr->fbmem, fPtr->fbmem_len + fPtr->fbi.fbi_fboffset) == -1) {
1254			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1255				   "munmap: %s\n", strerror(errno));
1256		}
1257
1258		fPtr->fbmem = NULL;
1259	}
1260#ifdef XFreeXDGA
1261	if (fPtr->pDGAMode) {
1262		free(fPtr->pDGAMode);
1263		fPtr->pDGAMode = NULL;
1264		fPtr->nDGAMode = 0;
1265	}
1266#endif
1267	pScrn->vtSema = FALSE;
1268
1269	/* Unwrap CloseScreen. */
1270	pScreen->CloseScreen = fPtr->CloseScreen;
1271	TRACE_EXIT("WsfbCloseScreen");
1272	return (*pScreen->CloseScreen)(CLOSE_SCREEN_ARGS);
1273}
1274
1275static void *
1276WsfbWindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
1277		CARD32 *size, void *closure)
1278{
1279	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1280	WsfbPtr fPtr = WSFBPTR(pScrn);
1281
1282	/*
1283	 * XXX
1284	 * This should never happen. Is it really necessary?
1285	 */
1286	if (fPtr->fbi.fbi_stride)
1287		*size = fPtr->fbi.fbi_stride;
1288	else {
1289		if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, size) == -1)
1290			return NULL;
1291		fPtr->fbi.fbi_stride = *size;
1292	}
1293	return ((CARD8 *)fPtr->fbstart + row * fPtr->fbi.fbi_stride + offset);
1294}
1295
1296#ifdef HAVE_SHADOW_AFB
1297/*
1298 * For use with shadowUpdateAfb8
1299 *
1300 * For video memory layout with non-interleaved bitplanes.
1301 */
1302static void *
1303WsfbWindowAfb(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
1304		CARD32 *size, void *closure)
1305{
1306	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1307	WsfbPtr fPtr = WSFBPTR(pScrn);
1308
1309	/* size is offset from start of bitplane to next bitplane */
1310	*size = fPtr->fbi.fbi_stride * fPtr->fbi.fbi_height;
1311	return ((CARD8 *)fPtr->fbstart + row * fPtr->fbi.fbi_stride + offset);
1312}
1313#endif
1314
1315static void
1316WsfbPointerMoved(SCRN_ARG_TYPE arg, int x, int y)
1317{
1318    SCRN_INFO_PTR(arg);
1319    WsfbPtr fPtr = WSFBPTR(pScrn);
1320    int newX, newY;
1321
1322    switch (fPtr->rotate)
1323    {
1324    case WSFB_ROTATE_CW:
1325	/* 90 degrees CW rotation. */
1326	newX = pScrn->pScreen->height - y - 1;
1327	newY = x;
1328	break;
1329
1330    case WSFB_ROTATE_CCW:
1331	/* 90 degrees CCW rotation. */
1332	newX = y;
1333	newY = pScrn->pScreen->width - x - 1;
1334	break;
1335
1336    case WSFB_ROTATE_UD:
1337	/* 180 degrees UD rotation. */
1338	newX = pScrn->pScreen->width - x - 1;
1339	newY = pScrn->pScreen->height - y - 1;
1340	break;
1341
1342    default:
1343	/* No rotation. */
1344	newX = x;
1345	newY = y;
1346	break;
1347    }
1348
1349    /* Pass adjusted pointer coordinates to wrapped PointerMoved function. */
1350    (*fPtr->PointerMoved)(arg, newX, newY);
1351}
1352
1353static Bool
1354WsfbEnterVT(VT_FUNC_ARGS_DECL)
1355{
1356	SCRN_INFO_PTR(arg);
1357	WsfbPtr fPtr = WSFBPTR(pScrn);
1358	int mode;
1359
1360	TRACE_ENTER("EnterVT");
1361	pScrn->vtSema = TRUE;
1362
1363	/* Restore the graphics mode. */
1364	mode = WSDISPLAYIO_MODE_DUMBFB;
1365	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
1366		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1367			   "error setting graphics mode %s\n", strerror(errno));
1368	}
1369
1370	TRACE_EXIT("EnterVT");
1371	return TRUE;
1372}
1373
1374static void
1375WsfbLeaveVT(VT_FUNC_ARGS_DECL)
1376{
1377	SCRN_INFO_PTR(arg);
1378	WsfbPtr fPtr = WSFBPTR(pScrn);
1379	int mode;
1380
1381	TRACE_ENTER("LeaveVT");
1382
1383	/*
1384	 * stuff to do:
1385	 * - turn off hw cursor
1386	 * - restore colour map if WSFB_CI
1387	 * - ioctl(WSDISPLAYIO_MODE_EMUL) to notify the kernel driver that
1388	 *   we're backing off
1389	 */
1390
1391	if (fPtr->fbi.fbi_pixeltype == WSFB_CI &&
1392	    fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries > 0) {
1393		/* reset colormap for text mode */
1394		if (ioctl(fPtr->fd, WSDISPLAYIO_PUTCMAP,
1395			  &(fPtr->saved_cmap)) == -1) {
1396			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1397				   "error restoring colormap %s\n",
1398				   strerror(errno));
1399		}
1400	}
1401
1402	/* Restore the text mode. */
1403	mode = WSDISPLAYIO_MODE_EMUL;
1404	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
1405		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1406			   "error setting text mode %s\n", strerror(errno));
1407	}
1408
1409	pScrn->vtSema = FALSE;
1410	TRACE_EXIT("LeaveVT");
1411}
1412
1413static Bool
1414WsfbSwitchMode(SWITCH_MODE_ARGS_DECL)
1415{
1416	TRACE_ENTER("SwitchMode");
1417	/* Nothing else to do. */
1418	return TRUE;
1419}
1420
1421static int
1422WsfbValidMode(SCRN_ARG_TYPE arg, DisplayModePtr mode, Bool verbose, int flags)
1423{
1424	TRACE_ENTER("ValidMode");
1425	return MODE_OK;
1426}
1427
1428static void
1429WsfbLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
1430	       LOCO *colors, VisualPtr pVisual)
1431{
1432	WsfbPtr fPtr = WSFBPTR(pScrn);
1433	struct wsdisplay_cmap cmap;
1434	unsigned char red[256],green[256],blue[256];
1435	int i, indexMin=256, indexMax=0;
1436
1437	TRACE_ENTER("LoadPalette");
1438
1439	/* nothing to do if there is no color palette support */
1440	if (fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries == 0)
1441		return;
1442
1443	cmap.count   = 1;
1444	cmap.red   = red;
1445	cmap.green = green;
1446	cmap.blue  = blue;
1447
1448	if (numColors == 1) {
1449		/* Optimisation */
1450		cmap.index = indices[0];
1451		red[0]   = colors[indices[0]].red;
1452		green[0] = colors[indices[0]].green;
1453		blue[0]  = colors[indices[0]].blue;
1454		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
1455			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
1456	} else {
1457		/*
1458		 * Change all colors in 2 ioctls
1459		 * and limit the data to be transfered.
1460		 */
1461		for (i = 0; i < numColors; i++) {
1462			if (indices[i] < indexMin)
1463				indexMin = indices[i];
1464			if (indices[i] > indexMax)
1465				indexMax = indices[i];
1466		}
1467		cmap.index = indexMin;
1468		cmap.count = indexMax - indexMin + 1;
1469		cmap.red = &red[indexMin];
1470		cmap.green = &green[indexMin];
1471		cmap.blue = &blue[indexMin];
1472		/* Get current map. */
1473		if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP, &cmap) == -1)
1474			ErrorF("ioctl FBIOGETCMAP: %s\n", strerror(errno));
1475		/* Change the colors that require updating. */
1476		for (i = 0; i < numColors; i++) {
1477			red[indices[i]]   = colors[indices[i]].red;
1478			green[indices[i]] = colors[indices[i]].green;
1479			blue[indices[i]]  = colors[indices[i]].blue;
1480		}
1481		/* Write the colormap back. */
1482		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
1483			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
1484	}
1485	TRACE_EXIT("LoadPalette");
1486}
1487
1488static Bool
1489WsfbSaveScreen(ScreenPtr pScreen, int mode)
1490{
1491	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1492	WsfbPtr fPtr = WSFBPTR(pScrn);
1493	int state;
1494
1495	TRACE_ENTER("SaveScreen");
1496
1497	if (!pScrn->vtSema)
1498		return TRUE;
1499
1500	if (mode != SCREEN_SAVER_FORCER) {
1501		state = xf86IsUnblank(mode)?WSDISPLAYIO_VIDEO_ON:
1502		                            WSDISPLAYIO_VIDEO_OFF;
1503		ioctl(fPtr->fd,
1504		      WSDISPLAYIO_SVIDEO, &state);
1505	}
1506	TRACE_EXIT("SaveScreen");
1507	return TRUE;
1508}
1509
1510
1511static void
1512WsfbSave(ScrnInfoPtr pScrn)
1513{
1514	WsfbPtr fPtr = WSFBPTR(pScrn);
1515
1516	TRACE_ENTER("WsfbSave");
1517
1518	/* nothing to save if we don't run in colour-indexed mode */
1519	if (fPtr->fbi.fbi_pixeltype != WSFB_CI)
1520		return;
1521
1522	/* nothing to do if no color palette support */
1523	if (fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries == 0)
1524		return;
1525
1526	fPtr->saved_cmap.index = 0;
1527	fPtr->saved_cmap.count = fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries;
1528	if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP,
1529		  &(fPtr->saved_cmap)) == -1) {
1530		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1531			   "error saving colormap %s\n", strerror(errno));
1532	}
1533	TRACE_EXIT("WsfbSave");
1534
1535}
1536
1537static void
1538WsfbRestore(ScrnInfoPtr pScrn)
1539{
1540	WsfbPtr fPtr = WSFBPTR(pScrn);
1541	int mode;
1542
1543	TRACE_ENTER("WsfbRestore");
1544
1545	if (fPtr->fbi.fbi_pixeltype == WSFB_CI &&
1546	    fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries > 0) {
1547		/* reset colormap for text mode */
1548		if (ioctl(fPtr->fd, WSDISPLAYIO_PUTCMAP,
1549			  &(fPtr->saved_cmap)) == -1) {
1550			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1551				   "error restoring colormap %s\n",
1552				   strerror(errno));
1553		}
1554	}
1555
1556	/* Clear the screen. */
1557	memset(fPtr->fbstart, 0, fPtr->fbmem_len);
1558
1559	/* Restore the text mode. */
1560	mode = WSDISPLAYIO_MODE_EMUL;
1561	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
1562		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1563			   "error setting text mode %s\n", strerror(errno));
1564	}
1565	TRACE_EXIT("WsfbRestore");
1566}
1567
1568#ifdef XFreeXDGA
1569/***********************************************************************
1570 * DGA stuff
1571 ***********************************************************************/
1572
1573static Bool
1574WsfbDGAOpenFramebuffer(ScrnInfoPtr pScrn, char **DeviceName,
1575		       unsigned char **ApertureBase, int *ApertureSize,
1576		       int *ApertureOffset, int *flags)
1577{
1578	*DeviceName = NULL;		/* No special device */
1579	*ApertureBase = (unsigned char *)(pScrn->memPhysBase);
1580	*ApertureSize = pScrn->videoRam;
1581	*ApertureOffset = pScrn->fbOffset;
1582	*flags = 0;
1583
1584	return TRUE;
1585}
1586
1587static Bool
1588WsfbDGASetMode(ScrnInfoPtr pScrn, DGAModePtr pDGAMode)
1589{
1590	DisplayModePtr pMode;
1591	int scrnIdx = pScrn->pScreen->myNum;
1592	int frameX0, frameY0;
1593
1594	if (pDGAMode) {
1595		pMode = pDGAMode->mode;
1596		frameX0 = frameY0 = 0;
1597	} else {
1598		if (!(pMode = pScrn->currentMode))
1599			return TRUE;
1600
1601		frameX0 = pScrn->frameX0;
1602		frameY0 = pScrn->frameY0;
1603	}
1604
1605	if (!(*pScrn->SwitchMode)(SWITCH_MODE_ARGS(pScrn, pMode)))
1606		return FALSE;
1607	(*pScrn->AdjustFrame)(ADJUST_FRAME_ARGS(pScrn, frameX0, frameY0));
1608
1609	return TRUE;
1610}
1611
1612static void
1613WsfbDGASetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
1614{
1615	(*pScrn->AdjustFrame)(ADJUST_FRAME_ARGS(pScrn, x, y));
1616}
1617
1618static int
1619WsfbDGAGetViewport(ScrnInfoPtr pScrn)
1620{
1621	return (0);
1622}
1623
1624static DGAFunctionRec WsfbDGAFunctions =
1625{
1626	WsfbDGAOpenFramebuffer,
1627	NULL,       /* CloseFramebuffer */
1628	WsfbDGASetMode,
1629	WsfbDGASetViewport,
1630	WsfbDGAGetViewport,
1631	NULL,       /* Sync */
1632	NULL,       /* FillRect */
1633	NULL,       /* BlitRect */
1634	NULL,       /* BlitTransRect */
1635};
1636
1637static void
1638WsfbDGAAddModes(ScrnInfoPtr pScrn)
1639{
1640	WsfbPtr fPtr = WSFBPTR(pScrn);
1641	DisplayModePtr pMode = pScrn->modes;
1642	DGAModePtr pDGAMode;
1643
1644	do {
1645		pDGAMode = realloc(fPtr->pDGAMode,
1646				    (fPtr->nDGAMode + 1) * sizeof(DGAModeRec));
1647		if (!pDGAMode)
1648			break;
1649
1650		fPtr->pDGAMode = pDGAMode;
1651		pDGAMode += fPtr->nDGAMode;
1652		(void)memset(pDGAMode, 0, sizeof(DGAModeRec));
1653
1654		++fPtr->nDGAMode;
1655		pDGAMode->mode = pMode;
1656		pDGAMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
1657		pDGAMode->byteOrder = pScrn->imageByteOrder;
1658		pDGAMode->depth = pScrn->depth;
1659		pDGAMode->bitsPerPixel = pScrn->bitsPerPixel;
1660		pDGAMode->red_mask = pScrn->mask.red;
1661		pDGAMode->green_mask = pScrn->mask.green;
1662		pDGAMode->blue_mask = pScrn->mask.blue;
1663		pDGAMode->visualClass = pScrn->bitsPerPixel > 8 ?
1664			TrueColor : PseudoColor;
1665		pDGAMode->xViewportStep = 1;
1666		pDGAMode->yViewportStep = 1;
1667		pDGAMode->viewportWidth = pMode->HDisplay;
1668		pDGAMode->viewportHeight = pMode->VDisplay;
1669
1670		if (fPtr->fbi.fbi_stride)
1671			pDGAMode->bytesPerScanline = fPtr->fbi.fbi_stride;
1672		else {
1673			ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES,
1674			      &fPtr->fbi.fbi_stride);
1675			pDGAMode->bytesPerScanline = fPtr->fbi.fbi_stride;
1676		}
1677
1678		pDGAMode->imageWidth = pMode->HDisplay;
1679		pDGAMode->imageHeight =  pMode->VDisplay;
1680		pDGAMode->pixmapWidth = pDGAMode->imageWidth;
1681		pDGAMode->pixmapHeight = pDGAMode->imageHeight;
1682		pDGAMode->maxViewportX = pScrn->virtualX -
1683			pDGAMode->viewportWidth;
1684		pDGAMode->maxViewportY = pScrn->virtualY -
1685			pDGAMode->viewportHeight;
1686
1687		pDGAMode->address = fPtr->fbstart;
1688
1689		pMode = pMode->next;
1690	} while (pMode != pScrn->modes);
1691}
1692
1693static Bool
1694WsfbDGAInit(ScrnInfoPtr pScrn, ScreenPtr pScreen)
1695{
1696	WsfbPtr fPtr = WSFBPTR(pScrn);
1697
1698	if (pScrn->depth < 8)
1699		return FALSE;
1700
1701	if (!fPtr->nDGAMode)
1702		WsfbDGAAddModes(pScrn);
1703
1704	return (DGAInit(pScreen, &WsfbDGAFunctions,
1705			fPtr->pDGAMode, fPtr->nDGAMode));
1706}
1707#endif
1708
1709static Bool
1710WsfbDriverFunc(ScrnInfoPtr pScrn, xorgDriverFuncOp op,
1711    pointer ptr)
1712{
1713	xorgHWFlags *flag;
1714
1715	switch (op) {
1716	case GET_REQUIRED_HW_INTERFACES:
1717		flag = (CARD32*)ptr;
1718		(*flag) = 0;
1719		return TRUE;
1720	default:
1721		return FALSE;
1722	}
1723}
1724
1725static inline void
1726memcpy32sw(void *dest, void *src, int len)
1727{
1728	uint32_t *d = dest, *s = src;
1729
1730#if DEBUG
1731	if ((((long)dest & 3) + ((long)src & 3) + (len & 3)) != 0) {
1732		xf86Msg(X_ERROR, "unaligned %s\n", __func__);
1733		return;
1734	}
1735#endif
1736	while (len > 0) {
1737		*d = bswap32(*s);
1738		d++;
1739		s++;
1740		len -= 4;
1741	}
1742}
1743
1744/* adapted from miext/shadow/shpacked.c::shadowUpdatePacked() */
1745void
1746WsfbShadowUpdateSwap32(ScreenPtr pScreen, shadowBufPtr pBuf)
1747{
1748    RegionPtr	damage = DamageRegion (pBuf->pDamage);
1749    PixmapPtr	pShadow = pBuf->pPixmap;
1750    int		nbox = RegionNumRects (damage);
1751    BoxPtr	pbox = RegionRects (damage);
1752    FbBits	*shaBase, *shaLine, *sha;
1753    FbStride	shaStride;
1754    int		scrBase, scrLine, scr;
1755    int		shaBpp;
1756    int		shaXoff, shaYoff; /* XXX assumed to be zero */
1757    int		x, y, w, h, width;
1758    int         i;
1759    FbBits	*winBase = NULL, *win;
1760    CARD32      winSize;
1761
1762    fbGetDrawable (&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, shaYoff);
1763    while (nbox--)
1764    {
1765	x = pbox->x1 * shaBpp;
1766	y = pbox->y1;
1767	w = (pbox->x2 - pbox->x1) * shaBpp;
1768	h = pbox->y2 - pbox->y1;
1769
1770	scrLine = (x >> FB_SHIFT);
1771	shaLine = shaBase + y * shaStride + (x >> FB_SHIFT);
1772
1773	x &= FB_MASK;
1774	w = (w + x + FB_MASK) >> FB_SHIFT;
1775
1776	while (h--)
1777	{
1778	    winSize = 0;
1779	    scrBase = 0;
1780	    width = w;
1781	    scr = scrLine;
1782	    sha = shaLine;
1783	    while (width) {
1784		/* how much remains in this window */
1785		i = scrBase + winSize - scr;
1786		if (i <= 0 || scr < scrBase)
1787		{
1788		    winBase = (FbBits *) (*pBuf->window) (pScreen,
1789							  y,
1790							  scr * sizeof (FbBits),
1791							  SHADOW_WINDOW_WRITE,
1792							  &winSize,
1793							  pBuf->closure);
1794		    if(!winBase)
1795			return;
1796		    scrBase = scr;
1797		    winSize /= sizeof (FbBits);
1798		    i = winSize;
1799		}
1800		win = winBase + (scr - scrBase);
1801		if (i > width)
1802		    i = width;
1803		width -= i;
1804		scr += i;
1805		memcpy32sw(win, sha, i * sizeof(FbBits));
1806		sha += i;
1807	    }
1808	    shaLine += shaStride;
1809	    y++;
1810	}
1811	pbox++;
1812    }
1813}
1814
1815void
1816WsfbShadowUpdateSplit(ScreenPtr pScreen, shadowBufPtr pBuf)
1817{
1818    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1819    WsfbPtr 	fPtr = WSFBPTR(pScrn);
1820    RegionPtr	damage = DamageRegion (pBuf->pDamage);
1821    PixmapPtr	pShadow = pBuf->pPixmap;
1822    int		nbox = RegionNumRects (damage);
1823    BoxPtr	pbox = RegionRects (damage);
1824    FbBits	*shaBase, *shaLine, *sha;
1825    FbStride	shaStride;
1826    int		scrBase, scrLine, scr;
1827    int		shaBpp;
1828    int		shaXoff, shaYoff; /* XXX assumed to be zero */
1829    int		x, y, w, h, width;
1830    int         i;
1831    FbBits	*winBase = NULL, *win, *win2;
1832    unsigned long split = fPtr->fbi.fbi_fbsize / 2;
1833    CARD32      winSize;
1834
1835    fbGetDrawable (&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, shaYoff);
1836    while (nbox--)
1837    {
1838	x = pbox->x1 * shaBpp;
1839	y = pbox->y1;
1840	w = (pbox->x2 - pbox->x1) * shaBpp;
1841	h = pbox->y2 - pbox->y1;
1842
1843	scrLine = (x >> FB_SHIFT);
1844	shaLine = shaBase + y * shaStride + (x >> FB_SHIFT);
1845
1846	x &= FB_MASK;
1847	w = (w + x + FB_MASK) >> FB_SHIFT;
1848
1849	while (h--)
1850	{
1851	    winSize = 0;
1852	    scrBase = 0;
1853	    width = w;
1854	    scr = scrLine;
1855	    sha = shaLine;
1856	    while (width) {
1857		/* how much remains in this window */
1858		i = scrBase + winSize - scr;
1859		if (i <= 0 || scr < scrBase)
1860		{
1861		    winBase = (FbBits *) (*pBuf->window) (pScreen,
1862							  y,
1863							  scr * sizeof (FbBits),
1864							  SHADOW_WINDOW_WRITE,
1865							  &winSize,
1866							  pBuf->closure);
1867		    if(!winBase)
1868			return;
1869		    scrBase = scr;
1870		    winSize /= sizeof (FbBits);
1871		    i = winSize;
1872		}
1873		win = winBase + (scr - scrBase);
1874		win2 = (FbBits *)(split + (unsigned long)win);
1875		if (i > width)
1876		    i = width;
1877		width -= i;
1878		scr += i;
1879		memcpy(win, sha, i * sizeof(FbBits));
1880		memcpy(win2, sha, i * sizeof(FbBits));
1881		sha += i;
1882	    }
1883	    shaLine += shaStride;
1884	    y++;
1885	}
1886	pbox++;
1887    }
1888}
1889