cg14_driver.c revision 7a5333bc 
1/*
2 * CG14 framebuffer driver.
3 *
4 * Copyright (C) 2000 Jakub Jelinek (jakub@redhat.com)
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * JAKUB JELINEK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24#ifdef HAVE_CONFIG_H
25#include "config.h"
26#endif
27
28#include <sys/ioctl.h>
29#include <string.h>
30#include <sys/ioctl.h>
31
32#include "xf86.h"
33#include "xf86_OSproc.h"
34#include "mipointer.h"
35#include "micmap.h"
36
37#include "fb.h"
38#include "xf86cmap.h"
39#include "shadow.h"
40#include "cg14.h"
41
42#if 0
43#define static
44#endif
45
46#include "compat-api.h"
47
48static const OptionInfoRec * CG14AvailableOptions(int chipid, int busid);
49static void	CG14Identify(int flags);
50static Bool	CG14Probe(DriverPtr drv, int flags);
51static Bool	CG14PreInit(ScrnInfoPtr pScrn, int flags);
52static Bool	CG14ScreenInit(SCREEN_INIT_ARGS_DECL);
53static Bool	CG14EnterVT(VT_FUNC_ARGS_DECL);
54static void	CG14LeaveVT(VT_FUNC_ARGS_DECL);
55static Bool	CG14CloseScreen(CLOSE_SCREEN_ARGS_DECL);
56static Bool	CG14SaveScreen(ScreenPtr pScreen, int mode);
57static void	CG14InitCplane24(ScrnInfoPtr pScrn);
58static void	CG14ExitCplane24(ScrnInfoPtr pScrn);
59static void    *CG14WindowLinear(ScreenPtr, CARD32, CARD32, int, CARD32 *,
60			      void *);
61
62/* Required if the driver supports mode switching */
63static Bool	CG14SwitchMode(SWITCH_MODE_ARGS_DECL);
64/* Required if the driver supports moving the viewport */
65static void	CG14AdjustFrame(ADJUST_FRAME_ARGS_DECL);
66
67/* Optional functions */
68static void	CG14FreeScreen(FREE_SCREEN_ARGS_DECL);
69static ModeStatus CG14ValidMode(SCRN_ARG_TYPE arg, DisplayModePtr mode,
70				Bool verbose, int flags);
71
72void CG14Sync(ScrnInfoPtr pScrn);
73
74#define CG14_VERSION 4000
75#define CG14_NAME "SUNCG14"
76#define CG14_DRIVER_NAME "suncg14"
77#define CG14_MAJOR_VERSION PACKAGE_VERSION_MAJOR
78#define CG14_MINOR_VERSION PACKAGE_VERSION_MINOR
79#define CG14_PATCHLEVEL PACKAGE_VERSION_PATCHLEVEL
80
81/*
82 * This contains the functions needed by the server after loading the driver
83 * module.  It must be supplied, and gets passed back by the SetupProc
84 * function in the dynamic case.  In the static case, a reference to this
85 * is compiled in, and this requires that the name of this DriverRec be
86 * an upper-case version of the driver name.
87 */
88
89_X_EXPORT DriverRec SUNCG14 = {
90    CG14_VERSION,
91    CG14_DRIVER_NAME,
92    CG14Identify,
93    CG14Probe,
94    CG14AvailableOptions,
95    NULL,
96    0
97};
98
99typedef enum {
100	OPTION_SHADOW_FB,
101	OPTION_HW_CURSOR,
102	OPTION_SW_CURSOR
103} CG14Opts;
104
105static const OptionInfoRec CG14Options[] = {
106    { OPTION_SHADOW_FB, "ShadowFB", OPTV_BOOLEAN, {0}, TRUE},
107    { -1,			NULL,		OPTV_NONE,	{0}, FALSE }
108};
109
110#ifdef XFree86LOADER
111
112static MODULESETUPPROTO(cg14Setup);
113
114static XF86ModuleVersionInfo suncg14VersRec =
115{
116	"suncg14",
117	MODULEVENDORSTRING,
118	MODINFOSTRING1,
119	MODINFOSTRING2,
120	XORG_VERSION_CURRENT,
121	CG14_MAJOR_VERSION, CG14_MINOR_VERSION, CG14_PATCHLEVEL,
122	ABI_CLASS_VIDEODRV,
123	ABI_VIDEODRV_VERSION,
124	MOD_CLASS_VIDEODRV,
125	{0,0,0,0}
126};
127
128_X_EXPORT XF86ModuleData suncg14ModuleData = {
129	&suncg14VersRec,
130	cg14Setup,
131	NULL
132};
133
134pointer
135cg14Setup(pointer module, pointer opts, int *errmaj, int *errmin)
136{
137    static Bool setupDone = FALSE;
138
139    if (!setupDone) {
140	setupDone = TRUE;
141	xf86AddDriver(&SUNCG14, module, 0);
142
143	/*
144	 * Modules that this driver always requires can be loaded here
145	 * by calling LoadSubModule().
146	 */
147
148	/*
149	 * The return value must be non-NULL on success even though there
150	 * is no TearDownProc.
151	 */
152	return (pointer)TRUE;
153    } else {
154	if (errmaj) *errmaj = LDR_ONCEONLY;
155	return NULL;
156    }
157}
158
159#endif /* XFree86LOADER */
160
161static Bool
162CG14GetRec(ScrnInfoPtr pScrn)
163{
164    /*
165     * Allocate an Cg14Rec, and hook it into pScrn->driverPrivate.
166     * pScrn->driverPrivate is initialised to NULL, so we can check if
167     * the allocation has already been done.
168     */
169    if (pScrn->driverPrivate != NULL)
170	return TRUE;
171
172    pScrn->driverPrivate = xnfcalloc(sizeof(Cg14Rec), 1);
173    return TRUE;
174}
175
176static void
177CG14FreeRec(ScrnInfoPtr pScrn)
178{
179    Cg14Ptr pCg14;
180
181    if (pScrn->driverPrivate == NULL)
182	return;
183
184    pCg14 = GET_CG14_FROM_SCRN(pScrn);
185
186    free(pScrn->driverPrivate);
187    pScrn->driverPrivate = NULL;
188
189    return;
190}
191
192static const OptionInfoRec *
193CG14AvailableOptions(int chipid, int busid)
194{
195    return CG14Options;
196}
197
198/* Mandatory */
199static void
200CG14Identify(int flags)
201{
202    xf86Msg(X_INFO, "%s: driver for CG14\n", CG14_NAME);
203}
204
205
206/* Mandatory */
207static Bool
208CG14Probe(DriverPtr drv, int flags)
209{
210    int i;
211    GDevPtr *devSections;
212    int *usedChips;
213    int numDevSections;
214    int numUsed;
215    Bool foundScreen = FALSE;
216    EntityInfoPtr pEnt;
217
218    /*
219     * The aim here is to find all cards that this driver can handle,
220     * and for the ones not already claimed by another driver, claim the
221     * slot, and allocate a ScrnInfoRec.
222     *
223     * This should be a minimal probe, and it should under no circumstances
224     * change the state of the hardware.  Because a device is found, don't
225     * assume that it will be used.  Don't do any initialisations other than
226     * the required ScrnInfoRec initialisations.  Don't allocate any new
227     * data structures.
228     */
229
230    /*
231     * Next we check, if there has been a chipset override in the config file.
232     * For this we must find out if there is an active device section which
233     * is relevant, i.e., which has no driver specified or has THIS driver
234     * specified.
235     */
236
237    if ((numDevSections = xf86MatchDevice(CG14_DRIVER_NAME,
238					  &devSections)) <= 0) {
239	/*
240	 * There's no matching device section in the config file, so quit
241	 * now.
242	 */
243	return FALSE;
244    }
245
246    /*
247     * We need to probe the hardware first.  We then need to see how this
248     * fits in with what is given in the config file, and allow the config
249     * file info to override any contradictions.
250     */
251
252    numUsed = xf86MatchSbusInstances(CG14_NAME, SBUS_DEVICE_CG14,
253		   devSections, numDevSections,
254		   drv, &usedChips);
255
256    free(devSections);
257    if (numUsed <= 0)
258	return FALSE;
259
260    if (flags & PROBE_DETECT)
261	foundScreen = TRUE;
262    else for (i = 0; i < numUsed; i++) {
263	pEnt = xf86GetEntityInfo(usedChips[i]);
264
265	/*
266	 * Check that nothing else has claimed the slots.
267	 */
268	if(pEnt->active) {
269	    ScrnInfoPtr pScrn;
270
271	    /* Allocate a ScrnInfoRec and claim the slot */
272	    pScrn = xf86AllocateScreen(drv, 0);
273
274	    /* Fill in what we can of the ScrnInfoRec */
275	    pScrn->driverVersion = CG14_VERSION;
276	    pScrn->driverName	 = CG14_DRIVER_NAME;
277	    pScrn->name		 = CG14_NAME;
278	    pScrn->Probe	 = CG14Probe;
279	    pScrn->PreInit	 = CG14PreInit;
280	    pScrn->ScreenInit	 = CG14ScreenInit;
281  	    pScrn->SwitchMode	 = CG14SwitchMode;
282  	    pScrn->AdjustFrame	 = CG14AdjustFrame;
283	    pScrn->EnterVT	 = CG14EnterVT;
284	    pScrn->LeaveVT	 = CG14LeaveVT;
285	    pScrn->FreeScreen	 = CG14FreeScreen;
286	    pScrn->ValidMode	 = CG14ValidMode;
287	    xf86AddEntityToScreen(pScrn, pEnt->index);
288	    foundScreen = TRUE;
289	}
290	free(pEnt);
291    }
292    free(usedChips);
293    return foundScreen;
294}
295
296/* Mandatory */
297static Bool
298CG14PreInit(ScrnInfoPtr pScrn, int flags)
299{
300    Cg14Ptr pCg14;
301    sbusDevicePtr psdp = NULL;
302    int i, from;
303
304    if (flags & PROBE_DETECT) return FALSE;
305
306    /*
307     * Note: This function is only called once at server startup, and
308     * not at the start of each server generation.  This means that
309     * only things that are persistent across server generations can
310     * be initialised here.  xf86Screens[] is (pScrn is a pointer to one
311     * of these).  Privates allocated using xf86AllocateScrnInfoPrivateIndex()
312     * are too, and should be used for data that must persist across
313     * server generations.
314     *
315     * Per-generation data should be allocated with
316     * AllocateScreenPrivateIndex() from the ScreenInit() function.
317     */
318
319    /* Allocate the Cg14Rec driverPrivate */
320    if (!CG14GetRec(pScrn)) {
321	return FALSE;
322    }
323    pCg14 = GET_CG14_FROM_SCRN(pScrn);
324
325    /* Set pScrn->monitor */
326    pScrn->monitor = pScrn->confScreen->monitor;
327
328    /* This driver doesn't expect more than one entity per screen */
329    if (pScrn->numEntities > 1)
330	return FALSE;
331    /* This is the general case */
332    for (i = 0; i < pScrn->numEntities; i++) {
333	EntityInfoPtr pEnt = xf86GetEntityInfo(pScrn->entityList[i]);
334
335	/* CG14 is purely AFX, but we handle it like SBUS */
336	if (pEnt->location.type == BUS_SBUS) {
337	    psdp = xf86GetSbusInfoForEntity(pEnt->index);
338	    pCg14->psdp = psdp;
339	} else
340	    return FALSE;
341    }
342    if (psdp == NULL)
343	return FALSE;
344
345    /*********************
346    deal with depth
347    *********************/
348
349    if (!xf86SetDepthBpp(pScrn, 0, 0, 0, Support24bppFb|Support32bppFb))
350		return FALSE;
351    /* Check that the returned depth is one we support */
352    switch (pScrn->depth) {
353	case 32:
354	case 24:
355	    /* OK */
356	    break;
357	default:
358	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
359		       "Given depth (%d) is not supported by this driver\n",
360		       pScrn->depth);
361	    return FALSE;
362    }
363
364    /* Collect all of the relevant option flags (fill in pScrn->options) */
365    xf86CollectOptions(pScrn, NULL);
366    /* Process the options */
367    if (!(pCg14->Options = malloc(sizeof(CG14Options))))
368	return FALSE;
369    memcpy(pCg14->Options, CG14Options, sizeof(CG14Options));
370    xf86ProcessOptions(pScrn->scrnIndex, pScrn->options, pCg14->Options);
371    pCg14->use_shadow = xf86ReturnOptValBool(pCg14->Options, OPTION_SHADOW_FB,
372        TRUE);
373
374    /*
375     * This must happen after pScrn->display has been set because
376     * xf86SetWeight references it.
377     */
378    if (pScrn->depth > 8) {
379	rgb weight = {0, 0, 0};
380	rgb mask = {0xff, 0xff00, 0xff0000};
381
382	if (!xf86SetWeight(pScrn, weight, mask)) {
383	    return FALSE;
384	}
385    }
386
387    if (!xf86SetDefaultVisual(pScrn, -1))
388	return FALSE;
389    else if (pScrn->depth > 8) {
390	/* We don't currently support DirectColor */
391	if (pScrn->defaultVisual != TrueColor) {
392	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
393		       " (%s) is not supported\n",
394		       xf86GetVisualName(pScrn->defaultVisual));
395	    return FALSE;
396	}
397    }
398
399    /*
400     * The new cmap code requires this to be initialised.
401     */
402
403    {
404	Gamma zeros = {0.0, 0.0, 0.0};
405
406	if (!xf86SetGamma(pScrn, zeros)) {
407	    return FALSE;
408	}
409    }
410
411    if (xf86LoadSubModule(pScrn, "fb") == NULL) {
412	CG14FreeRec(pScrn);
413	return FALSE;
414    }
415
416    if (pCg14->use_shadow) {
417	xf86DrvMsg(pScrn->scrnIndex, X_CONFIG, "Using shadow framebuffer\n");
418	if (xf86LoadSubModule(pScrn, "shadow") == NULL) {
419	    CG14FreeRec(pScrn);
420	    return FALSE;
421	}
422    }
423
424    from = X_DEFAULT;
425    pCg14->HWCursor = TRUE;
426    if (xf86GetOptValBool(pCg14->Options, OPTION_HW_CURSOR, &pCg14->HWCursor))
427	from = X_CONFIG;
428    if (xf86ReturnOptValBool(pCg14->Options, OPTION_SW_CURSOR, FALSE)) {
429	from = X_CONFIG;
430	pCg14->HWCursor = FALSE;
431    }
432    xf86DrvMsg(pScrn->scrnIndex, from, "Using %s cursor\n",
433		pCg14->HWCursor ? "HW" : "SW");
434
435    /*********************
436    set up clock and mode stuff
437    *********************/
438
439    pScrn->progClock = TRUE;
440
441    if(pScrn->display->virtualX || pScrn->display->virtualY) {
442	xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
443		   "CG14 does not support a virtual desktop\n");
444	pScrn->display->virtualX = 0;
445	pScrn->display->virtualY = 0;
446    }
447
448    xf86SbusUseBuiltinMode(pScrn, pCg14->psdp);
449    pScrn->currentMode = pScrn->modes;
450    pScrn->displayWidth = pScrn->virtualX;
451
452    /* Set display resolution */
453    xf86SetDpi(pScrn, 0, 0);
454
455    return TRUE;
456}
457
458static Bool
459CG14CreateScreenResources(ScreenPtr pScreen)
460{
461    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
462    Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
463    PixmapPtr pPixmap;
464    Bool ret;
465
466    pScreen->CreateScreenResources = pCg14->CreateScreenResources;
467    ret = pScreen->CreateScreenResources(pScreen);
468    pScreen->CreateScreenResources = CG14CreateScreenResources;
469
470    if (!ret)
471	return FALSE;
472
473    pPixmap = pScreen->GetScreenPixmap(pScreen);
474
475    if (!shadowAdd(pScreen, pPixmap, shadowUpdatePackedWeak(),
476	CG14WindowLinear, 0, NULL)) {
477	return FALSE;
478    }
479    return TRUE;
480}
481
482
483static Bool
484CG14ShadowInit(ScreenPtr pScreen)
485{
486    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
487    Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
488
489    if (!shadowSetup(pScreen)) {
490	return FALSE;
491    }
492
493    pCg14->CreateScreenResources = pScreen->CreateScreenResources;
494    pScreen->CreateScreenResources = CG14CreateScreenResources;
495
496    return TRUE;
497}
498/* Mandatory */
499
500/* This gets called at the start of each server generation */
501
502static Bool
503CG14ScreenInit(SCREEN_INIT_ARGS_DECL)
504{
505    ScrnInfoPtr pScrn;
506    Cg14Ptr pCg14;
507    VisualPtr visual;
508    int ret;
509
510    /*
511     * First get the ScrnInfoRec
512     */
513    pScrn = xf86ScreenToScrn(pScreen);
514
515    pCg14 = GET_CG14_FROM_SCRN(pScrn);
516
517    /* Map the CG14 memory */
518    pCg14->fb = xf86MapSbusMem (pCg14->psdp, CG14_BGR_VOFF, 4 *
519				(pCg14->psdp->width * pCg14->psdp->height));
520    pCg14->x32 = xf86MapSbusMem (pCg14->psdp, CG14_X32_VOFF,
521				 (pCg14->psdp->width * pCg14->psdp->height));
522    pCg14->xlut = xf86MapSbusMem (pCg14->psdp, CG14_XLUT_VOFF, 4096);
523    pCg14->curs = xf86MapSbusMem (pCg14->psdp, CG14_CURSOR_VOFF, 4096);
524
525    pCg14->width = pCg14->psdp->width;
526    pCg14->height = pCg14->psdp->height;
527
528    if (! pCg14->fb || !pCg14->x32 || !pCg14->xlut || !pCg14->curs) {
529    	xf86Msg(X_ERROR,
530	    "can't mmap something: fd %08x  x32 %08x xlut %08x cursor %08x\n",
531	    (uint32_t)pCg14->fb, (uint32_t)pCg14->x32, (uint32_t)pCg14->xlut,
532	    (uint32_t)pCg14->curs);
533	return FALSE;
534    }
535
536    /* Darken the screen for aesthetic reasons and set the viewport */
537    CG14SaveScreen(pScreen, SCREEN_SAVER_ON);
538
539    /*
540     * The next step is to setup the screen's visuals, and initialise the
541     * framebuffer code.  In cases where the framebuffer's default
542     * choices for things like visual layouts and bits per RGB are OK,
543     * this may be as simple as calling the framebuffer's ScreenInit()
544     * function.  If not, the visuals will need to be setup before calling
545     * a fb ScreenInit() function and fixed up after.
546     */
547
548    /*
549     * Reset visual list.
550     */
551    miClearVisualTypes();
552
553    /* Setup the visuals we support. */
554
555    if (!miSetVisualTypes(pScrn->depth, TrueColorMask,
556			  pScrn->rgbBits, pScrn->defaultVisual))
557	return FALSE;
558
559    miSetPixmapDepths ();
560
561    if (pCg14->use_shadow) {
562	pCg14->shadow = xcalloc(1, pScrn->virtualX * pScrn->virtualY * 4);
563
564	if (!pCg14->shadow) {
565	    xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
566	        "Failed to allocate shadow framebuffer\n");
567	    return FALSE;
568	}
569    }
570
571    /*
572     * Call the framebuffer layer's ScreenInit function, and fill in other
573     * pScreen fields.
574     */
575
576    CG14InitCplane24(pScrn);
577    ret = fbScreenInit(pScreen, pCg14->use_shadow ? pCg14->shadow : pCg14->fb,
578    		       pScrn->virtualX,
579		       pScrn->virtualY, pScrn->xDpi, pScrn->yDpi,
580		       pScrn->virtualX, pScrn->bitsPerPixel);
581
582    if (!ret)
583	return FALSE;
584
585#if 0
586    /* must be after RGB ordering fixed */
587    fbPictureInit (pScreen, 0, 0);
588
589    if (pCg14->use_shadow && !CG14ShadowInit(pScreen)) {
590	xf86DrvMsg(scrnIndex, X_ERROR,
591		    "shadow framebuffer initialization failed\n");
592	return FALSE;
593    }
594
595    miInitializeBackingStore(pScreen);
596#endif
597
598    xf86SetBackingStore(pScreen);
599    xf86SetSilkenMouse(pScreen);
600
601    xf86SetBlackWhitePixels(pScreen);
602
603    if (pScrn->bitsPerPixel > 8) {
604	/* Fixup RGB ordering */
605	visual = pScreen->visuals + pScreen->numVisuals;
606	while (--visual >= pScreen->visuals) {
607	    if ((visual->class | DynamicClass) == DirectColor) {
608		visual->offsetRed = pScrn->offset.red;
609		visual->offsetGreen = pScrn->offset.green;
610		visual->offsetBlue = pScrn->offset.blue;
611		visual->redMask = pScrn->mask.red;
612		visual->greenMask = pScrn->mask.green;
613		visual->blueMask = pScrn->mask.blue;
614	    }
615	}
616    }
617
618    /* Initialise cursor functions */
619    miDCInitialize (pScreen, xf86GetPointerScreenFuncs());
620
621    /* check for hardware cursor support */
622    if (pCg14->HWCursor)
623	CG14SetupCursor(pScreen);
624
625    /* Initialise default colourmap */
626    if (!miCreateDefColormap(pScreen))
627	return FALSE;
628
629    pCg14->CloseScreen = pScreen->CloseScreen;
630    pScreen->CloseScreen = CG14CloseScreen;
631    pScreen->SaveScreen = CG14SaveScreen;
632
633    /* Report any unused options (only for the first generation) */
634    if (serverGeneration == 1) {
635	xf86ShowUnusedOptions(pScrn->scrnIndex, pScrn->options);
636    }
637
638    /* unblank the screen */
639    CG14SaveScreen(pScreen, SCREEN_SAVER_OFF);
640
641    /* Done */
642    return TRUE;
643}
644
645
646/* Usually mandatory */
647static Bool
648CG14SwitchMode(SWITCH_MODE_ARGS_DECL)
649{
650    xf86Msg(X_ERROR, "CG14SwitchMode\n");
651    return TRUE;
652}
653
654
655/*
656 * This function is used to initialize the Start Address - the first
657 * displayed location in the video memory.
658 */
659/* Usually mandatory */
660static void
661CG14AdjustFrame(ADJUST_FRAME_ARGS_DECL)
662{
663    /* we don't support virtual desktops */
664    return;
665}
666
667/*
668 * This is called when VT switching back to the X server.  Its job is
669 * to reinitialise the video mode.
670 */
671
672/* Mandatory */
673static Bool
674CG14EnterVT(VT_FUNC_ARGS_DECL)
675{
676    SCRN_INFO_PTR(arg);
677
678    CG14InitCplane24 (pScrn);
679    return TRUE;
680}
681
682
683/*
684 * This is called when VT switching away from the X server.
685 */
686
687/* Mandatory */
688static void
689CG14LeaveVT(VT_FUNC_ARGS_DECL)
690{
691    SCRN_INFO_PTR(arg);
692
693    CG14ExitCplane24 (pScrn);
694    return;
695}
696
697
698/*
699 * This is called at the end of each server generation.  It restores the
700 * original (text) mode.  It should really also unmap the video memory too.
701 */
702
703/* Mandatory */
704static Bool
705CG14CloseScreen(CLOSE_SCREEN_ARGS_DECL)
706{
707    ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
708    Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
709    PixmapPtr pPixmap;
710
711    if (pCg14->use_shadow) {
712
713	pPixmap = pScreen->GetScreenPixmap(pScreen);
714	shadowRemove(pScreen, pPixmap);
715	pCg14->use_shadow = FALSE;
716    }
717
718    pScrn->vtSema = FALSE;
719    CG14ExitCplane24 (pScrn);
720    xf86UnmapSbusMem(pCg14->psdp, pCg14->fb,
721		     (pCg14->psdp->width * pCg14->psdp->height * 4));
722    xf86UnmapSbusMem(pCg14->psdp, pCg14->x32,
723		     (pCg14->psdp->width * pCg14->psdp->height));
724    xf86UnmapSbusMem(pCg14->psdp, pCg14->xlut, 4096);
725    xf86UnmapSbusMem(pCg14->psdp, pCg14->curs, 4096);
726
727    pScreen->CloseScreen = pCg14->CloseScreen;
728    return (*pScreen->CloseScreen)(CLOSE_SCREEN_ARGS);
729}
730
731static void *
732CG14WindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
733		CARD32 *size, void *closure)
734{
735    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
736    Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
737
738    *size = pCg14->width << 2;
739    return (CARD8 *)pCg14->fb + row * (pCg14->width << 2) + offset;
740}
741
742/* Free up any per-generation data structures */
743
744/* Optional */
745static void
746CG14FreeScreen(FREE_SCREEN_ARGS_DECL)
747{
748    SCRN_INFO_PTR(arg);
749    CG14FreeRec(pScrn);
750}
751
752
753/* Checks if a mode is suitable for the selected chipset. */
754
755/* Optional */
756static ModeStatus
757CG14ValidMode(SCRN_ARG_TYPE arg, DisplayModePtr mode, Bool verbose, int flags)
758{
759    if (mode->Flags & V_INTERLACE)
760	return(MODE_BAD);
761
762    return(MODE_OK);
763}
764
765/* Do screen blanking */
766
767/* Mandatory */
768static Bool
769CG14SaveScreen(ScreenPtr pScreen, int mode)
770{
771    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
772    Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
773    int state;
774    switch(mode) {
775	case SCREEN_SAVER_ON:
776	case SCREEN_SAVER_CYCLE:
777		state = FBVIDEO_OFF;
778		ioctl(pCg14->psdp->fd, FBIOSVIDEO, &state);
779		break;
780	case SCREEN_SAVER_OFF:
781	case SCREEN_SAVER_FORCER:
782		state = FBVIDEO_ON;
783		ioctl(pCg14->psdp->fd, FBIOSVIDEO, &state);
784		break;
785	default:
786		return FALSE;
787    }
788    return TRUE;
789}
790
791/*
792 * This is the implementation of the Sync() function.
793 */
794void
795CG14Sync(ScrnInfoPtr pScrn)
796{
797    return;
798}
799
800/*
801 * This initializes the card for 24 bit mode.
802 */
803static void
804CG14InitCplane24(ScrnInfoPtr pScrn)
805{
806  Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
807  int size, bpp;
808
809  size = pScrn->virtualX * pScrn->virtualY;
810  bpp = 32;
811  ioctl (pCg14->psdp->fd, CG14_SET_PIXELMODE, &bpp);
812  memset (pCg14->fb, 0, size * 4);
813  memset (pCg14->x32, 0, size);
814  memset (pCg14->xlut, 0, 0x200);
815}
816
817/*
818 * This initializes the card for 8 bit mode.
819 */
820static void
821CG14ExitCplane24(ScrnInfoPtr pScrn)
822{
823  Cg14Ptr pCg14 = GET_CG14_FROM_SCRN(pScrn);
824  int bpp = 8;
825
826  ioctl (pCg14->psdp->fd, CG14_SET_PIXELMODE, &bpp);
827}
828