ngle_driver.c revision 77e25d50 
1/* $NetBSD: ngle_driver.c,v 1.8 2024/12/10 10:02:52 macallan Exp $ */
2/*
3 * Copyright (c) 2024 Michael Lorenz
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/* a driver for HP's NGLE family of graphics chips */
33
34#ifdef HAVE_CONFIG_H
35#include "config.h"
36#endif
37#include <sys/types.h>
38#include <dev/ic/stireg.h>
39
40#include <fcntl.h>
41#include <errno.h>
42#include <sys/time.h>
43#include <sys/mman.h>
44#include <sys/ioctl.h>
45#include <dev/wscons/wsconsio.h>
46
47/* all driver need this */
48#include "xf86.h"
49#include "xf86_OSproc.h"
50
51#include "mipointer.h"
52#include "micmap.h"
53#include "colormapst.h"
54#include "xf86cmap.h"
55#ifdef XvExtension
56#include "xf86xv.h"
57#endif
58
59/* for visuals */
60#include "fb.h"
61
62#include "ngle.h"
63
64/* #include "wsconsio.h" */
65
66#define NGLE_DEFAULT_DEV "/dev/ttyE0"
67
68static pointer NGLESetup(pointer, pointer, int *, int *);
69static Bool NGLEGetRec(ScrnInfoPtr);
70static void NGLEFreeRec(ScrnInfoPtr);
71static const OptionInfoRec * NGLEAvailableOptions(int, int);
72static void NGLEIdentify(int);
73static Bool NGLEProbe(DriverPtr, int);
74static Bool NGLEPreInit(ScrnInfoPtr, int);
75static Bool NGLEScreenInit(SCREEN_INIT_ARGS_DECL);
76static Bool NGLECloseScreen(CLOSE_SCREEN_ARGS_DECL);
77static Bool NGLEEnterVT(VT_FUNC_ARGS_DECL);
78static void NGLELeaveVT(VT_FUNC_ARGS_DECL);
79static Bool NGLESwitchMode(SWITCH_MODE_ARGS_DECL);
80static int NGLEValidMode(SCRN_ARG_TYPE, DisplayModePtr, Bool, int);
81static void NGLELoadPalette(ScrnInfoPtr, int, int *, LOCO *, VisualPtr);
82static Bool NGLESaveScreen(ScreenPtr, int);
83static void NGLESave(ScrnInfoPtr);
84static void NGLERestore(ScrnInfoPtr);
85
86/* helper functions */
87static int ngle_open(const char *);
88static pointer ngle_mmap(size_t, off_t, int, int);
89
90#define VERSION			4000
91#define NGLE_NAME		"ngle"
92#define NGLE_DRIVER_NAME	"ngle"
93#define NGLE_MAJOR_VERSION	0
94#define NGLE_MINOR_VERSION	1
95
96DriverRec NGLE = {
97	VERSION,
98	NGLE_DRIVER_NAME,
99	NGLEIdentify,
100	NGLEProbe,
101	NGLEAvailableOptions,
102	NULL,
103	0
104};
105
106/* Supported "chipsets" */
107static SymTabRec NGLEChipsets[] = {
108	{ STI_DD_EG, "Visualize EG" },
109	{ STI_DD_HCRX, "HCRX" },
110	{ STI_DD_SUMMIT, "Visualize FX 2/4/6"},
111	{ -1, NULL }
112};
113
114/* Supported options */
115typedef enum {
116	OPTION_HW_CURSOR,
117	OPTION_DEVICE
118} NGLEOpts;
119
120static const OptionInfoRec NGLEOptions[] = {
121	{ OPTION_HW_CURSOR, "HWcursor",	OPTV_BOOLEAN,	{0}, FALSE },
122	{ OPTION_DEVICE,    "Device",   OPTV_ANYSTR,    {0}, FALSE },
123	{ -1, NULL, OPTV_NONE, {0}, FALSE}
124};
125
126static XF86ModuleVersionInfo NGLEVersRec = {
127	"ngle",
128	"The NetBSD Foundation",
129	MODINFOSTRING1,
130	MODINFOSTRING2,
131	XORG_VERSION_CURRENT,
132	NGLE_MAJOR_VERSION, NGLE_MINOR_VERSION, 0,
133	ABI_CLASS_VIDEODRV,
134	ABI_VIDEODRV_VERSION,
135	NULL,
136	{0, 0, 0, 0}
137};
138
139_X_EXPORT XF86ModuleData ngleModuleData = { &NGLEVersRec, NGLESetup, NULL };
140
141static pointer
142NGLESetup(pointer module, pointer opts, int *errmaj, int *errmin)
143{
144	static Bool setupDone = FALSE;
145	const char *osname;
146
147	if (!setupDone) {
148		setupDone = TRUE;
149		xf86AddDriver(&NGLE, module, 0);
150		return (pointer)1;
151	} else {
152		if (errmaj != NULL)
153			*errmaj = LDR_ONCEONLY;
154		return NULL;
155	}
156}
157
158static Bool
159NGLEGetRec(ScrnInfoPtr pScrn)
160{
161
162	if (pScrn->driverPrivate != NULL)
163		return TRUE;
164
165	pScrn->driverPrivate = xnfcalloc(sizeof(NGLERec), 1);
166	return TRUE;
167}
168
169static void
170NGLEFreeRec(ScrnInfoPtr pScrn)
171{
172
173	if (pScrn->driverPrivate == NULL)
174		return;
175	free(pScrn->driverPrivate);
176	pScrn->driverPrivate = NULL;
177}
178
179static const OptionInfoRec *
180NGLEAvailableOptions(int chipid, int busid)
181{
182	return NGLEOptions;
183}
184
185static void
186NGLEIdentify(int flags)
187{
188	xf86PrintChipsets(NGLE_NAME, "driver for NGLE framebuffers",
189			  NGLEChipsets);
190}
191
192
193#define priv_open_device(n)	open(n,O_RDWR|O_NONBLOCK|O_EXCL)
194
195/* Open the framebuffer device */
196static int
197ngle_open(const char *dev)
198{
199	int fd = -1;
200
201	/* try argument from XF86Config first */
202	if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
203		/* second: environment variable */
204		dev = getenv("XDEVICE");
205		if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
206			/* last try: default device */
207			dev = NGLE_DEFAULT_DEV;
208			if ((fd = priv_open_device(dev)) == -1) {
209				return -1;
210			}
211		}
212	}
213	return fd;
214}
215
216/* Map the framebuffer's memory */
217static pointer
218ngle_mmap(size_t len, off_t off, int fd, int ro)
219{
220	pointer mapaddr;
221
222	/*
223	 * try and make it private first, that way once we get it, an
224	 * interloper, e.g. another server, can't get this frame buffer,
225	 * and if another server already has it, this one won't.
226	 */
227	if (ro) {
228		mapaddr = (pointer) mmap(NULL, len,
229					 PROT_READ, MAP_SHARED,
230					 fd, off);
231		xf86Msg(X_ERROR, "mapping %08x read only\n", off);
232	} else {
233		mapaddr = (pointer) mmap(NULL, len,
234					 PROT_READ | PROT_WRITE, MAP_SHARED,
235					 fd, off);
236		xf86Msg(X_ERROR, "mapping %08x read/write\n", off);
237	}
238	if (mapaddr == (pointer) -1) {
239		mapaddr = NULL;
240	}
241#ifdef NGLE_DEBUG
242	ErrorF("mmap returns: addr %p len 0x%x\n", mapaddr, len);
243#endif
244	return mapaddr;
245}
246
247static Bool
248NGLEProbe(DriverPtr drv, int flags)
249{
250	ScrnInfoPtr pScrn = NULL;
251	int i, fd, entity, wstype;
252       	GDevPtr *devSections;
253	int numDevSections;
254	char *dev;
255	const char *name;
256	uint32_t gid;
257	Bool foundScreen = FALSE;
258
259	if ((numDevSections = xf86MatchDevice(NGLE_DRIVER_NAME,
260					      &devSections)) <= 0)
261		return FALSE;
262
263
264	if ((fd = ngle_open(NGLE_DEFAULT_DEV)) == 0)
265		return FALSE;
266
267	if (ioctl(fd, WSDISPLAYIO_GTYPE, &wstype) == -1)
268		return FALSE;
269
270	if (wstype != WSDISPLAY_TYPE_STI)
271		return FALSE;
272
273	if (ioctl(fd, GCID, &gid) == -1)
274		return FALSE;
275
276	/* reject GIDs not in the table */
277	if ((name = xf86TokenToString(NGLEChipsets, gid)) == NULL)
278		return FALSE;
279
280	xf86Msg(X_INFO, "%s: found %s ( GID %08x )\n", __func__, name, gid);
281
282	if ( xf86DoConfigure && xf86DoConfigurePass1 ) {
283		GDevPtr pGDev;
284
285		pGDev = xf86AddBusDeviceToConfigure(NGLE_DRIVER_NAME, BUS_NONE,
286			NULL, 0);
287		if (pGDev) {
288			/*
289			 * XF86Match???Instances() treat chipID and chipRev as
290			 * overrides, so clobber them here.
291			 */
292			pGDev->chipID = pGDev->chipRev = -1;
293	    	}
294	}
295
296	if (flags & PROBE_DETECT) {
297		return TRUE;
298	}
299
300	/* ok, at this point we know we've got a NGLE */
301	for (i = 0; i < numDevSections; i++) {
302
303		entity = xf86ClaimFbSlot(drv, 0, devSections[i], TRUE);
304		pScrn = xf86ConfigFbEntity(NULL, 0, entity,
305		    NULL, NULL, NULL, NULL);
306		if (pScrn != NULL) {
307			foundScreen = TRUE;
308			pScrn->driverVersion = VERSION;
309			pScrn->driverName = NGLE_DRIVER_NAME;
310			pScrn->name = NGLE_NAME;
311			pScrn->Probe = NGLEProbe;
312			pScrn->PreInit = NGLEPreInit;
313			pScrn->ScreenInit = NGLEScreenInit;
314			pScrn->SwitchMode = NGLESwitchMode;
315			pScrn->AdjustFrame = NULL;
316			pScrn->EnterVT = NGLEEnterVT;
317			pScrn->LeaveVT = NGLELeaveVT;
318			pScrn->ValidMode = NGLEValidMode;
319
320		}
321	}
322	free(devSections);
323	return foundScreen;
324}
325
326static Bool
327NGLEPreInit(ScrnInfoPtr pScrn, int flags)
328{
329	NGLEPtr fPtr;
330	int default_depth, bitsperpixel, gid;
331	const char *dev;
332	char *mod = NULL;
333	const char *reqSym = NULL;
334	Gamma zeros = {0.0, 0.0, 0.0};
335	DisplayModePtr mode;
336	MessageType from;
337	rgb rgbzeros = { 0, 0, 0 }, masks;
338
339	if (flags & PROBE_DETECT) return FALSE;
340
341	if (pScrn->numEntities != 1) return FALSE;
342
343	pScrn->monitor = pScrn->confScreen->monitor;
344
345	NGLEGetRec(pScrn);
346	fPtr = NGLEPTR(pScrn);
347
348	fPtr->pEnt = xf86GetEntityInfo(pScrn->entityList[0]);
349
350	dev = xf86FindOptionValue(fPtr->pEnt->device->options, "device");
351	fPtr->fd = ngle_open(dev);
352	if (fPtr->fd == -1) {
353		return FALSE;
354	}
355
356	if (ioctl(fPtr->fd, WSDISPLAYIO_GET_FBINFO, &fPtr->fbi) == -1) {
357		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
358			   "ioctl WSDISPLAY_GINFO: %s\n",
359			   strerror(errno));
360		return FALSE;
361	}
362
363	if (ioctl(fPtr->fd, GCID, &gid) == -1)
364		return FALSE;
365
366	fPtr->gid = gid;
367	fPtr->fbacc = 0;
368
369	switch (gid) {
370		case STI_DD_EG:
371			fPtr->buf = BINapp0I;
372			fPtr->fbacc = BA(IndexedDcd, Otc04, Ots08, AddrByte, 0, fPtr->buf, 0);
373			fPtr->reglen = 0x400000;
374			break;
375		case STI_DD_HCRX:
376			/* XXX BINovly if in 8 bit */
377			fPtr->buf = BINapp0F8;
378			fPtr->fbacc = BA(IndexedDcd, Otc04, Ots08, AddrLong, 0, fPtr->buf, 0);
379			/*
380			 * XXX
381			 * we don't know yet how much usable video memory we
382			 * have but EXA gets cranky if there is no off screen
383			 * memory at all, so we give it one line and cross
384			 * fingers
385			 */
386			fPtr->fbi.fbi_fbsize += 8192;
387			fPtr->reglen = 0x400000;
388			break;
389		case STI_DD_SUMMIT:
390			fPtr->reglen = 0x1000000;
391			break;
392	}
393	xf86Msg(X_ERROR, "gid %08x fb access %08x\n", fPtr->gid, fPtr->fbacc);
394
395	/* Handle depth */
396	default_depth = fPtr->fbi.fbi_bitsperpixel <= 24 ? fPtr->fbi.fbi_bitsperpixel : 24;
397	bitsperpixel = fPtr->fbi.fbi_bitsperpixel == 15 ? 16 : fPtr->fbi.fbi_bitsperpixel;
398	if (!xf86SetDepthBpp(pScrn, default_depth, default_depth,
399		bitsperpixel,
400		bitsperpixel >= 24 ? Support24bppFb|Support32bppFb : 0))
401		return FALSE;
402
403	xf86PrintDepthBpp(pScrn);
404
405	/* color weight */
406	masks.red =   0x00ff0000;
407	masks.green = 0x0000ff00;
408	masks.blue =  0x000000ff;
409	if (!xf86SetWeight(pScrn, rgbzeros, masks))
410		return FALSE;
411
412	/* visual init */
413	if (!xf86SetDefaultVisual(pScrn, -1))
414		return FALSE;
415
416	/* We don't currently support DirectColor at > 8bpp */
417	if (pScrn->depth > 8 && pScrn->defaultVisual != TrueColor) {
418		xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
419			   " (%s) is not supported at depth %d\n",
420			   xf86GetVisualName(pScrn->defaultVisual),
421			   pScrn->depth);
422		return FALSE;
423	}
424
425	xf86SetGamma(pScrn,zeros);
426
427	pScrn->progClock = TRUE;
428	pScrn->rgbBits   = 8;
429	pScrn->chipset   = "NGLE";
430	fPtr->fbmem_len = pScrn->videoRam  = fPtr->fbi.fbi_fbsize;
431
432	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Vidmem: %dk\n",
433		   pScrn->videoRam/1024);
434
435	/* handle options */
436	xf86CollectOptions(pScrn, NULL);
437	if (!(fPtr->Options = malloc(sizeof(NGLEOptions))))
438		return FALSE;
439	memcpy(fPtr->Options, NGLEOptions, sizeof(NGLEOptions));
440	xf86ProcessOptions(pScrn->scrnIndex, fPtr->pEnt->device->options,
441			   fPtr->Options);
442
443	/* fake video mode struct */
444	mode = (DisplayModePtr)malloc(sizeof(DisplayModeRec));
445	mode->prev = mode;
446	mode->next = mode;
447	mode->name = "NGLE current mode";
448	mode->status = MODE_OK;
449	mode->type = M_T_BUILTIN;
450	mode->Clock = 0;
451	mode->HDisplay = fPtr->fbi.fbi_width;
452	mode->HSyncStart = 0;
453	mode->HSyncEnd = 0;
454	mode->HTotal = 0;
455	mode->HSkew = 0;
456	mode->VDisplay = fPtr->fbi.fbi_height;
457	mode->VSyncStart = 0;
458	mode->VSyncEnd = 0;
459	mode->VTotal = 0;
460	mode->VScan = 0;
461	mode->Flags = 0;
462	if (pScrn->modes != NULL) {
463		xf86DrvMsg(pScrn->scrnIndex, X_INFO,
464		   "Ignoring mode specification from screen section\n");
465	}
466	pScrn->currentMode = pScrn->modes = mode;
467	pScrn->virtualX = fPtr->fbi.fbi_width;
468	pScrn->virtualY = fPtr->fbi.fbi_height;
469	pScrn->displayWidth = 2048;
470
471	/* Set the display resolution */
472	xf86SetDpi(pScrn, 0, 0);
473
474	from = X_DEFAULT;
475	fPtr->HWCursor = FALSE;
476	if (xf86GetOptValBool(fPtr->Options, OPTION_HW_CURSOR, &fPtr->HWCursor)) {
477		from = X_CONFIG;
478		fPtr->HWCursor = TRUE;
479	}
480	xf86DrvMsg(pScrn->scrnIndex, from, "Using %s cursor\n",
481		fPtr->HWCursor ? "HW" : "SW");
482
483	if (xf86LoadSubModule(pScrn, "fb") == NULL) {
484		NGLEFreeRec(pScrn);
485		return FALSE;
486	}
487
488	if (xf86LoadSubModule(pScrn, "exa") == NULL) {
489		NGLEFreeRec(pScrn);
490		return FALSE;
491	}
492
493	return TRUE;
494}
495
496static Bool
497NGLEScreenInit(SCREEN_INIT_ARGS_DECL)
498{
499	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
500	NGLEPtr fPtr = NGLEPTR(pScrn);
501	VisualPtr visual;
502	int ret, flags, width, height, i, j;
503	int wsmode = WSDISPLAYIO_MODE_MAPPED;
504	size_t len;
505
506#ifdef NGLE_DEBUG
507	ErrorF("\tbitsPerPixel=%d, depth=%d, defaultVisual=%s\n"
508	       "\tmask: %x,%x,%x, offset: %d,%d,%d\n",
509	       pScrn->bitsPerPixel,
510	       pScrn->depth,
511	       xf86GetVisualName(pScrn->defaultVisual),
512	       pScrn->mask.red,pScrn->mask.green,pScrn->mask.blue,
513	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);
514#endif
515
516	/* Switch to graphics mode - required before mmap */
517	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &wsmode) == -1) {
518		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
519			   "ioctl WSDISPLAYIO_SMODE: %s\n",
520			   strerror(errno));
521		return FALSE;
522	}
523
524	fPtr->regs = ngle_mmap(fPtr->reglen, 0x80000000, fPtr->fd, 0);
525
526	if (fPtr->regs == NULL) {
527		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
528			   "ngle_mmap registers: %s\n", strerror(errno));
529		return FALSE;
530	}
531
532	fPtr->fbmem = ngle_mmap(fPtr->fbmem_len, 0, fPtr->fd, 0);
533	if (fPtr->fbmem == NULL) {
534		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
535			   "ngle_mmap fb: %s\n", strerror(errno));
536		return FALSE;
537	}
538
539	NGLESave(pScrn);
540	pScrn->vtSema = TRUE;
541
542	/* mi layer */
543	miClearVisualTypes();
544	if (pScrn->bitsPerPixel > 8) {
545		if (!miSetVisualTypes(pScrn->depth, TrueColorMask,
546				      pScrn->rgbBits, TrueColor))
547			return FALSE;
548	} else {
549		if (!miSetVisualTypes(pScrn->depth,
550				      miGetDefaultVisualMask(pScrn->depth),
551				      pScrn->rgbBits, pScrn->defaultVisual))
552			return FALSE;
553	}
554
555	if (!miSetPixmapDepths())
556		return FALSE;
557
558	height = pScrn->virtualY;
559	width = pScrn->virtualX;
560
561	ret = fbScreenInit(pScreen,
562			   fPtr->fbmem,
563			   width, height,
564			   pScrn->xDpi, pScrn->yDpi,
565			   pScrn->displayWidth,
566			   pScrn->bitsPerPixel);
567
568	if (!ret)
569		return FALSE;
570
571	if (pScrn->bitsPerPixel > 8) {
572		/* Fixup RGB ordering. */
573		visual = pScreen->visuals + pScreen->numVisuals;
574		while (--visual >= pScreen->visuals) {
575			if ((visual->class | DynamicClass) == DirectColor) {
576				visual->offsetRed   = pScrn->offset.red;
577				visual->offsetGreen = pScrn->offset.green;
578				visual->offsetBlue  = pScrn->offset.blue;
579				visual->redMask     = pScrn->mask.red;
580				visual->greenMask   = pScrn->mask.green;
581				visual->blueMask    = pScrn->mask.blue;
582			}
583		}
584	}
585
586	if (!fbPictureInit(pScreen, NULL, 0))
587		xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
588			   "RENDER extension initialisation failed.");
589
590	xf86SetBlackWhitePixels(pScreen);
591	xf86SetBackingStore(pScreen);
592
593	if (fPtr) {
594		if (fPtr->gid == STI_DD_SUMMIT) {
595			SummitInitAccel(pScreen);
596		} else
597			NGLEInitAccel(pScreen);
598		xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Using acceleration\n");
599	}
600
601	/* software cursor */
602	miDCInitialize(pScreen, xf86GetPointerScreenFuncs());
603
604	/* check for hardware cursor support */
605	NGLESetupCursor(pScreen);
606
607	/* colormap */
608	if (!miCreateDefColormap(pScreen))
609		return FALSE;
610
611	flags = CMAP_RELOAD_ON_MODE_SWITCH;
612	if(!xf86HandleColormaps(pScreen, 256, 8, NGLELoadPalette,
613				NULL, flags))
614		return FALSE;
615
616	pScreen->SaveScreen = NGLESaveScreen;
617
618#ifdef XvExtension
619	{
620		XF86VideoAdaptorPtr *ptr;
621
622		int n = xf86XVListGenericAdaptors(pScrn,&ptr);
623		if (n) {
624			xf86XVScreenInit(pScreen,ptr,n);
625		}
626	}
627#endif
628
629	/* Wrap the current CloseScreen function */
630	fPtr->CloseScreen = pScreen->CloseScreen;
631	pScreen->CloseScreen = NGLECloseScreen;
632
633	return TRUE;
634}
635
636static Bool
637NGLECloseScreen(CLOSE_SCREEN_ARGS_DECL)
638{
639	ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
640	NGLEPtr fPtr = NGLEPTR(pScrn);
641
642	if (pScrn->vtSema) {
643		NGLERestore(pScrn);
644		if (munmap(fPtr->regs, fPtr->reglen) == -1) {
645			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
646				   "munmap engine: %s\n", strerror(errno));
647		}
648
649		if (munmap(fPtr->fbmem, fPtr->fbmem_len) == -1) {
650			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
651				   "munmap fb: %s\n", strerror(errno));
652		}
653
654		fPtr->regs = NULL;
655		fPtr->fbmem = NULL;
656	}
657	pScrn->vtSema = FALSE;
658
659	/* unwrap CloseScreen */
660	pScreen->CloseScreen = fPtr->CloseScreen;
661	return (*pScreen->CloseScreen)(pScreen);
662}
663
664static Bool
665NGLEEnterVT(VT_FUNC_ARGS_DECL)
666{
667	SCRN_INFO_PTR(arg);
668
669	pScrn->vtSema = TRUE;
670	return TRUE;
671}
672
673static void
674NGLELeaveVT(VT_FUNC_ARGS_DECL)
675{
676}
677
678static Bool
679NGLESwitchMode(SWITCH_MODE_ARGS_DECL)
680{
681
682	/* Nothing else to do */
683	return TRUE;
684}
685
686static int
687NGLEValidMode(SCRN_ARG_TYPE, DisplayModePtr mode, Bool verbose, int flags)
688{
689
690	return MODE_OK;
691}
692
693static void
694NGLELoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
695	       LOCO *colors, VisualPtr pVisual)
696{
697	NGLEPtr fPtr = NGLEPTR(pScrn);
698	struct wsdisplay_cmap cmap;
699	unsigned char red[256],green[256],blue[256];
700	int i, indexMin=256, indexMax=0;
701
702	/* nothing to do if there is no color palette support */
703	if (fPtr->fbi.fbi_subtype.fbi_cmapinfo.cmap_entries == 0)
704		return;
705
706	cmap.count   = 1;
707	cmap.red   = red;
708	cmap.green = green;
709	cmap.blue  = blue;
710
711	if (numColors == 1) {
712		/* Optimisation */
713		cmap.index = indices[0];
714		red[0]   = colors[indices[0]].red;
715		green[0] = colors[indices[0]].green;
716		blue[0]  = colors[indices[0]].blue;
717		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
718			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
719	} else {
720		/*
721		 * Change all colors in 2 ioctls
722		 * and limit the data to be transferred.
723		 */
724		for (i = 0; i < numColors; i++) {
725			if (indices[i] < indexMin)
726				indexMin = indices[i];
727			if (indices[i] > indexMax)
728				indexMax = indices[i];
729		}
730		cmap.index = indexMin;
731		cmap.count = indexMax - indexMin + 1;
732		cmap.red = &red[indexMin];
733		cmap.green = &green[indexMin];
734		cmap.blue = &blue[indexMin];
735		/* Get current map. */
736		if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP, &cmap) == -1)
737			ErrorF("ioctl FBIOGETCMAP: %s\n", strerror(errno));
738		/* Change the colors that require updating. */
739		for (i = 0; i < numColors; i++) {
740			red[indices[i]]   = colors[indices[i]].red;
741			green[indices[i]] = colors[indices[i]].green;
742			blue[indices[i]]  = colors[indices[i]].blue;
743		}
744		/* Write the colormap back. */
745		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
746			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
747	}
748	fPtr->hwmode = -1;
749}
750
751static Bool
752NGLESaveScreen(ScreenPtr pScreen, int mode)
753{
754	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
755	NGLEPtr fPtr = NGLEPTR(pScrn);
756	int state;
757
758	if (!pScrn->vtSema)
759		return TRUE;
760
761	if (mode != SCREEN_SAVER_FORCER) {
762		state = xf86IsUnblank(mode)?WSDISPLAYIO_VIDEO_ON:
763		                            WSDISPLAYIO_VIDEO_OFF;
764		ioctl(fPtr->fd,
765		      WSDISPLAYIO_SVIDEO, &state);
766	}
767	return TRUE;
768}
769
770
771static void
772NGLESave(ScrnInfoPtr pScrn)
773{
774}
775
776static void
777NGLERestore(ScrnInfoPtr pScrn)
778{
779	NGLEPtr fPtr = NGLEPTR(pScrn);
780	int mode;
781
782	/* Restore the text mode */
783	mode = WSDISPLAYIO_MODE_EMUL;
784	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
785		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
786			   "error setting text mode %s\n", strerror(errno));
787	}
788}
789