fbdev.c 27.8 KB
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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/fbdev/fbdev.c,v 1.44 2003/09/24 02:43:21 dawes Exp $ */
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/*
 * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
 *	     Michel Dnzer, <michdaen@iiic.ethz.ch>
 */

/* all driver need this */
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86_ansic.h"

#include "mipointer.h"
#include "mibstore.h"
#include "micmap.h"
#include "colormapst.h"
#include "xf86cmap.h"
#include "shadow.h"
#include "dgaproc.h"

/* for visuals */
#include "fb.h"
#ifdef USE_AFB
#include "afb.h"
#endif

#include "xf86Resources.h"
#include "xf86RAC.h"

#include "fbdevhw.h"

#include "xf86xv.h"

#define DEBUG 0

#if DEBUG
# define TRACE_ENTER(str)       ErrorF("fbdev: " str " %d\n",pScrn->scrnIndex)
# define TRACE_EXIT(str)        ErrorF("fbdev: " str " done\n")
# define TRACE(str)             ErrorF("fbdev trace: " str "\n")
#else
# define TRACE_ENTER(str)
# define TRACE_EXIT(str)
# define TRACE(str)
#endif

/* -------------------------------------------------------------------- */
/* prototypes                                                           */

static const OptionInfoRec * FBDevAvailableOptions(int chipid, int busid);
static void	FBDevIdentify(int flags);
static Bool	FBDevProbe(DriverPtr drv, int flags);
static Bool	FBDevPreInit(ScrnInfoPtr pScrn, int flags);
static Bool	FBDevScreenInit(int Index, ScreenPtr pScreen, int argc,
				char **argv);
static Bool	FBDevCloseScreen(int scrnIndex, ScreenPtr pScreen);
static void *	FBDevWindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
				  CARD32 *size, void *closure);
static void	FBDevPointerMoved(int index, int x, int y);
static Bool	FBDevDGAInit(ScrnInfoPtr pScrn, ScreenPtr pScreen);


enum { FBDEV_ROTATE_NONE=0, FBDEV_ROTATE_CW=270, FBDEV_ROTATE_UD=180, FBDEV_ROTATE_CCW=90 };

/*static ShadowUpdateProc updateFuncs[] =
  { shadowUpdatePacked, shadowUpdateRotate8_270, shadowUpdateRotate8_180, shadowUpdateRotate8_90,
    shadowUpdatePacked, shadowUpdateRotate16_270, shadowUpdateRotate16_180, shadowUpdateRotate16_90,
    shadowUpdatePacked, shadowUpdateRotate32_270, shadowUpdateRotate32_180, shadowUpdateRotate32_90 }; */


/* -------------------------------------------------------------------- */

/*
 * This is intentionally screen-independent.  It indicates the binding
 * choice made in the first PreInit.
 */
static int pix24bpp = 0;

#define VERSION			4000
#define FBDEV_NAME		"FBDEV"
#define FBDEV_DRIVER_NAME	"fbdev"
#define FBDEV_MAJOR_VERSION	0
#define FBDEV_MINOR_VERSION	1

DriverRec FBDEV = {
	VERSION,
	FBDEV_DRIVER_NAME,
#if 0
	"driver for linux framebuffer devices",
#endif
	FBDevIdentify,
	FBDevProbe,
	FBDevAvailableOptions,
	NULL,
	0
};

/* Supported "chipsets" */
static SymTabRec FBDevChipsets[] = {
    { 0, "fbdev" },
#ifdef USE_AFB
    { 0, "afb" },
#endif
    {-1, NULL }
};

/* Supported options */
typedef enum {
	OPTION_SHADOW_FB,
	OPTION_ROTATE,
	OPTION_FBDEV
} FBDevOpts;

static const OptionInfoRec FBDevOptions[] = {
	{ OPTION_SHADOW_FB,	"ShadowFB",	OPTV_BOOLEAN,	{0},	FALSE },
	{ OPTION_ROTATE,	"Rotate",	OPTV_STRING,	{0},	FALSE },
	{ OPTION_FBDEV,		"fbdev",	OPTV_STRING,	{0},	FALSE },
	{ -1,			NULL,		OPTV_NONE,	{0},	FALSE }
};

/* -------------------------------------------------------------------- */

static const char *afbSymbols[] = {
	"afbScreenInit",
	"afbCreateDefColormap",
	NULL
};

static const char *fbSymbols[] = {
	"fbScreenInit",
	"fbPictureInit",
	NULL
};

static const char *shadowSymbols[] = {
	"shadowAdd",
	"shadowAlloc",
	"shadowInit",
	"shadowSetup",
	"shadowUpdatePacked",
	"shadowUpdateRotatePacked",
	NULL
};

static const char *fbdevHWSymbols[] = {
	"fbdevHWInit",
	"fbdevHWProbe",
	"fbdevHWSetVideoModes",
	"fbdevHWUseBuildinMode",

	"fbdevHWGetDepth",
	"fbdevHWGetLineLength",
	"fbdevHWGetName",
	"fbdevHWGetType",
	"fbdevHWGetVidmem",
	"fbdevHWLinearOffset",
	"fbdevHWLoadPalette",
	"fbdevHWMapVidmem",
	"fbdevHWUnmapVidmem",

	/* colormap */
	"fbdevHWLoadpalette",

	/* ScrnInfo hooks */
	"fbdevHWAdjustFrame",
	"fbdevHWEnterVT",
	"fbdevHWLeaveVT",
	"fbdevHWModeInit",
	"fbdevHWRestore",
	"fbdevHWSave",
	"fbdevHWSaveScreen",
	"fbdevHWSwitchMode",
	"fbdevHWValidMode",

	"fbdevHWDPMSSet",

	NULL
};

#ifdef XFree86LOADER

MODULESETUPPROTO(FBDevSetup);

static XF86ModuleVersionInfo FBDevVersRec =
{
	"fbdev",
	MODULEVENDORSTRING,
	MODINFOSTRING1,
	MODINFOSTRING2,
	XF86_VERSION_CURRENT,
	FBDEV_MAJOR_VERSION, FBDEV_MINOR_VERSION, 0,
	ABI_CLASS_VIDEODRV,
	ABI_VIDEODRV_VERSION,
	NULL,
	{0,0,0,0}
};

XF86ModuleData fbdevModuleData = { &FBDevVersRec, FBDevSetup, NULL };

pointer
FBDevSetup(pointer module, pointer opts, int *errmaj, int *errmin)
{
	static Bool setupDone = FALSE;

	if (!setupDone) {
		setupDone = TRUE;
		xf86AddDriver(&FBDEV, module, 0);
		LoaderRefSymLists(afbSymbols, fbSymbols,
				  shadowSymbols, fbdevHWSymbols, NULL);
		return (pointer)1;
	} else {
		if (errmaj) *errmaj = LDR_ONCEONLY;
		return NULL;
	}
}

#endif /* XFree86LOADER */

/* -------------------------------------------------------------------- */
/* our private data, and two functions to allocate/free this            */

typedef struct {
	unsigned char*			fbstart;
	unsigned char*			fbmem;
	int				fboff;
	int				lineLength;
	unsigned char*			shadowmem;
	int				rotate;
	Bool				shadowFB;
	CloseScreenProcPtr		CloseScreen;
	void				(*PointerMoved)(int index, int x, int y);
	EntityInfoPtr			pEnt;
	/* DGA info */
	DGAModePtr			pDGAMode;
	int				nDGAMode;
	OptionInfoPtr			Options;
} FBDevRec, *FBDevPtr;

#define FBDEVPTR(p) ((FBDevPtr)((p)->driverPrivate))

static Bool
FBDevGetRec(ScrnInfoPtr pScrn)
{
	if (pScrn->driverPrivate != NULL)
		return TRUE;
	
	pScrn->driverPrivate = xnfcalloc(sizeof(FBDevRec), 1);
	return TRUE;
}

static void
FBDevFreeRec(ScrnInfoPtr pScrn)
{
	if (pScrn->driverPrivate == NULL)
		return;
	xfree(pScrn->driverPrivate);
	pScrn->driverPrivate = NULL;
}

/* -------------------------------------------------------------------- */

static const OptionInfoRec *
FBDevAvailableOptions(int chipid, int busid)
{
	return FBDevOptions;
}

static void
FBDevIdentify(int flags)
{
	xf86PrintChipsets(FBDEV_NAME, "driver for framebuffer", FBDevChipsets);
}

static Bool
FBDevProbe(DriverPtr drv, int flags)
{
	int i;
	ScrnInfoPtr pScrn;
       	GDevPtr *devSections;
	int numDevSections;
	int bus,device,func;
	char *dev;
	Bool foundScreen = FALSE;

	TRACE("probe start");

	/* For now, just bail out for PROBE_DETECT. */
	if (flags & PROBE_DETECT)
		return FALSE;

	if ((numDevSections = xf86MatchDevice(FBDEV_DRIVER_NAME, &devSections)) <= 0) 
	    return FALSE;
	
	if (!xf86LoadDrvSubModule(drv, "fbdevhw"))
	    return FALSE;
	    
	xf86LoaderReqSymLists(fbdevHWSymbols, NULL);
	
	for (i = 0; i < numDevSections; i++) {
	    Bool isIsa = FALSE;
	    Bool isPci = FALSE;

	    dev = xf86FindOptionValue(devSections[i]->options,"fbdev");
	    if (devSections[i]->busID) {
	        if (xf86ParsePciBusString(devSections[i]->busID,&bus,&device,
					  &func)) {
		    if (!xf86CheckPciSlot(bus,device,func))
		        continue;
		    isPci = TRUE;
		} else if (xf86ParseIsaBusString(devSections[i]->busID))
		    isIsa = TRUE;
		  
	    }
	    if (fbdevHWProbe(NULL,dev,NULL)) {
		pScrn = NULL;
		if (isPci) {
		    /* XXX what about when there's no busID set? */
		    int entity;
		    
		    entity = xf86ClaimPciSlot(bus,device,func,drv,
					      0,devSections[i],
					      TRUE);
		    pScrn = xf86ConfigPciEntity(pScrn,0,entity,
						      NULL,RES_SHARED_VGA,
						      NULL,NULL,NULL,NULL);
		    /* xf86DrvMsg() can't be called without setting these */
		    pScrn->driverName    = FBDEV_DRIVER_NAME;
		    pScrn->name          = FBDEV_NAME;
		    xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
			       "claimed PCI slot %d:%d:%d\n",bus,device,func);

		} else if (isIsa) {
		    int entity;
		    
		    entity = xf86ClaimIsaSlot(drv, 0,
					      devSections[i], TRUE);
		    pScrn = xf86ConfigIsaEntity(pScrn,0,entity,
						      NULL,RES_SHARED_VGA,
						      NULL,NULL,NULL,NULL);
		} else {
		   int entity;

		    entity = xf86ClaimFbSlot(drv, 0,
					      devSections[i], TRUE);
		    pScrn = xf86ConfigFbEntity(pScrn,0,entity,
					       NULL,NULL,NULL,NULL);
		   
		}
		if (pScrn) {
		    foundScreen = TRUE;
		    
		    pScrn->driverVersion = VERSION;
		    pScrn->driverName    = FBDEV_DRIVER_NAME;
		    pScrn->name          = FBDEV_NAME;
		    pScrn->Probe         = FBDevProbe;
		    pScrn->PreInit       = FBDevPreInit;
		    pScrn->ScreenInit    = FBDevScreenInit;
		    pScrn->SwitchMode    = fbdevHWSwitchMode;
		    pScrn->AdjustFrame   = fbdevHWAdjustFrame;
		    pScrn->EnterVT       = fbdevHWEnterVT;
		    pScrn->LeaveVT       = fbdevHWLeaveVT;
		    pScrn->ValidMode     = fbdevHWValidMode;
		    
		    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
			       "using %s\n", dev ? dev : "default device");
		}
	    }
	}
	xfree(devSections);
	TRACE("probe done");
	return foundScreen;
}

static Bool
FBDevPreInit(ScrnInfoPtr pScrn, int flags)
{
	FBDevPtr fPtr;
	int default_depth, fbbpp;
	const char *mod = NULL, *s;
	const char **syms = NULL;
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	int type;
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	if (flags & PROBE_DETECT) return FALSE;

	TRACE_ENTER("PreInit");

	/* Check the number of entities, and fail if it isn't one. */
	if (pScrn->numEntities != 1)
		return FALSE;

	pScrn->monitor = pScrn->confScreen->monitor;

	FBDevGetRec(pScrn);
	fPtr = FBDEVPTR(pScrn);

	fPtr->pEnt = xf86GetEntityInfo(pScrn->entityList[0]);

	pScrn->racMemFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;
	/* XXX Is this right?  Can probably remove RAC_FB */
	pScrn->racIoFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;

	if (fPtr->pEnt->location.type == BUS_PCI &&
	    xf86RegisterResources(fPtr->pEnt->index,NULL,ResExclusive)) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
		   "xf86RegisterResources() found resource conflicts\n");
		return FALSE;
	}

	/* open device */
	if (!fbdevHWInit(pScrn,NULL,xf86FindOptionValue(fPtr->pEnt->device->options,"fbdev")))
		return FALSE;
	default_depth = fbdevHWGetDepth(pScrn,&fbbpp);
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	if (!xf86SetDepthBpp(pScrn, default_depth, default_depth, fbbpp,
			     Support24bppFb | Support32bppFb | SupportConvert32to24 | PreferConvert32to24))
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		return FALSE;
	xf86PrintDepthBpp(pScrn);

	/* Get the depth24 pixmap format */
	if (pScrn->depth == 24 && pix24bpp == 0)
		pix24bpp = xf86GetBppFromDepth(pScrn, 24);

	/* color weight */
	if (pScrn->depth > 8) {
		rgb zeros = { 0, 0, 0 };
		if (!xf86SetWeight(pScrn, zeros, zeros))
			return FALSE;
	}

	/* visual init */
	if (!xf86SetDefaultVisual(pScrn, -1))
		return FALSE;

	/* We don't currently support DirectColor at > 8bpp */
	if (pScrn->depth > 8 && pScrn->defaultVisual != TrueColor) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
			   " (%s) is not supported at depth %d\n",
			   xf86GetVisualName(pScrn->defaultVisual), pScrn->depth);
		return FALSE;
	}

	{
		Gamma zeros = {0.0, 0.0, 0.0};

		if (!xf86SetGamma(pScrn,zeros)) {
			return FALSE;
		}
	}

	pScrn->progClock = TRUE;
	pScrn->rgbBits   = 8;
	pScrn->chipset   = "fbdev";
	pScrn->videoRam  = fbdevHWGetVidmem(pScrn);

	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Hardware: %s (vidmem: %dk)\n",
		   fbdevHWGetName(pScrn),pScrn->videoRam/1024);

	/* handle options */
	xf86CollectOptions(pScrn, NULL);
	if (!(fPtr->Options = xalloc(sizeof(FBDevOptions))))
		return FALSE;
	memcpy(fPtr->Options, FBDevOptions, sizeof(FBDevOptions));
	xf86ProcessOptions(pScrn->scrnIndex, fPtr->pEnt->device->options, fPtr->Options);

	/* use shadow framebuffer by default */
	fPtr->shadowFB = xf86ReturnOptValBool(fPtr->Options, OPTION_SHADOW_FB, TRUE);

	/* rotation */
	fPtr->rotate = FBDEV_ROTATE_NONE;
	if ((s = xf86GetOptValString(fPtr->Options, OPTION_ROTATE)))
	{
	  if(!xf86NameCmp(s, "CW"))
	  {
	    fPtr->shadowFB = TRUE;
	    fPtr->rotate = FBDEV_ROTATE_CW;
	    xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
		       "Rotating screen clockwise\n");
	  }
	  else if(!xf86NameCmp(s, "CCW"))
	  {
	    fPtr->shadowFB = TRUE;
	    fPtr->rotate = FBDEV_ROTATE_CCW;
	    xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
		       "Rotating screen counter clockwise\n");
	  }
	  else if(!xf86NameCmp(s, "UD"))
	  {
	    fPtr->shadowFB = TRUE;
	    fPtr->rotate = FBDEV_ROTATE_UD;
	    xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
		       "Rotating screen upside down\n");
	  }
	  else
	  {
	    xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
		       "\"%s\" is not a valid value for Option \"Rotate\"\n", s);
	    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		       "Valid options are \"CW\", \"CCW\" or \"UD\"\n");
	  }
	}

	/* select video modes */

	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Checking Modes against framebuffer device...\n");
	fbdevHWSetVideoModes(pScrn);

	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Checking Modes against monitor...\n");
	{
		DisplayModePtr mode, first = mode = pScrn->modes;
		
		if (mode != NULL) do {
			mode->status = xf86CheckModeForMonitor(mode, pScrn->monitor);
			mode = mode->next;
		} while (mode != NULL && mode != first);

		xf86PruneDriverModes(pScrn);
	}

	if (NULL == pScrn->modes)
		fbdevHWUseBuildinMode(pScrn);
	pScrn->currentMode = pScrn->modes;

	if (fPtr->shadowFB)
		pScrn->displayWidth = pScrn->virtualX;	/* ShadowFB handles this correctly */
	else {
		int fbbpp;
		/* FIXME: this doesn't work for all cases, e.g. when each scanline
			has a padding which is independent from the depth (controlfb) */
		fbdevHWGetDepth(pScrn,&fbbpp);
		pScrn->displayWidth = fbdevHWGetLineLength(pScrn)/(fbbpp >> 3);
	}

	xf86PrintModes(pScrn);

	/* Set display resolution */
	xf86SetDpi(pScrn, 0, 0);

	/* Load bpp-specific modules */
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	switch ((type = fbdevHWGetType(pScrn)))
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	{
	case FBDEVHW_PLANES:
		mod = "afb";
		syms = afbSymbols;
		break;
	case FBDEVHW_PACKED_PIXELS:
		switch (pScrn->bitsPerPixel)
		{
		case 8:
		case 16:
		case 24:
		case 32:
			mod = "fb";
			syms = fbSymbols;
			break;
		default:
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			"Unsupported bpp: %d", pScrn->bitsPerPixel);
			return FALSE;
		}
		break;
	case FBDEVHW_INTERLEAVED_PLANES:
               /* Not supported yet, don't know what to do with this */
               xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
               "Interleaved Planes are not supported yet by drivers/fbdev.");
		return FALSE;
	case FBDEVHW_TEXT:
               /* This should never happen ...
                * we should check for this much much earlier ... */
               xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
               "Text mode is not supprted by drivers/fbdev.\n"
               "Why do you want to run the X in TEXT mode anyway ?");
		return FALSE;
       case FBDEVHW_VGA_PLANES:
               /* Not supported yet */
               xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
               "EGA/VGA Planes are not supprted yet by drivers/fbdev.");
               return FALSE;
       default:
               xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
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               "Fbdev type (%d) not supported yet.", type);
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               return FALSE;
	}
	if (mod && xf86LoadSubModule(pScrn, mod) == NULL) {
		FBDevFreeRec(pScrn);
		return FALSE;
	}
	if (mod && syms) {
		xf86LoaderReqSymLists(syms, NULL);
	}

	/* Load shadow if needed */
	if (fPtr->shadowFB) {
		xf86DrvMsg(pScrn->scrnIndex, X_CONFIG, "Using \"Shadow Framebuffer\"\n");
		if (!xf86LoadSubModule(pScrn, "shadow")) {
			FBDevFreeRec(pScrn);
			return FALSE;
		}
		xf86LoaderReqSymLists(shadowSymbols, NULL);
	}

	TRACE_EXIT("PreInit");
	return TRUE;
}

static Bool
FBDevScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
{
	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
	FBDevPtr fPtr = FBDEVPTR(pScrn);
	VisualPtr visual;
	int init_picture = 0;
	int ret,flags,width,height;
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	int type;
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	TRACE_ENTER("FBDevScreenInit");

#if DEBUG
	ErrorF("\tbitsPerPixel=%d, depth=%d, defaultVisual=%s\n"
	       "\tmask: %x,%x,%x, offset: %d,%d,%d\n",
	       pScrn->bitsPerPixel,
	       pScrn->depth,
	       xf86GetVisualName(pScrn->defaultVisual),
	       pScrn->mask.red,pScrn->mask.green,pScrn->mask.blue,
	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);
#endif

	if (NULL == (fPtr->fbmem = fbdevHWMapVidmem(pScrn))) {
	        xf86DrvMsg(scrnIndex,X_ERROR,"Map vid mem failed\n");
		return FALSE;
	}
	fPtr->fboff = fbdevHWLinearOffset(pScrn);

	fbdevHWSave(pScrn);

	if (!fbdevHWModeInit(pScrn, pScrn->currentMode)) {
		xf86DrvMsg(scrnIndex,X_ERROR,"Mode init failed\n");
		return FALSE;
	}
	fbdevHWSaveScreen(pScreen, SCREEN_SAVER_ON);
	fbdevHWAdjustFrame(scrnIndex,0,0,0);

	/* mi layer */
	miClearVisualTypes();
	if (pScrn->bitsPerPixel > 8) {
		if (!miSetVisualTypes(pScrn->depth, TrueColorMask, pScrn->rgbBits, TrueColor)) {
			xf86DrvMsg(scrnIndex,X_ERROR,"Set visual types failed\n");
			return FALSE;
		}
	} else {
		if (!miSetVisualTypes(pScrn->depth,
				      miGetDefaultVisualMask(pScrn->depth),
				      pScrn->rgbBits, pScrn->defaultVisual)) {
			xf86DrvMsg(scrnIndex,X_ERROR,"Set visual types failed\n");
			return FALSE;
		}
	}
	if (!miSetPixmapDepths()) {
	  xf86DrvMsg(scrnIndex,X_ERROR,"Set pixmap depths failed\n");
	  return FALSE;
	}

	if(fPtr->rotate==FBDEV_ROTATE_CW || fPtr->rotate==FBDEV_ROTATE_CCW)
	{
	  height = pScrn->virtualX;
	  width = pScrn->displayWidth = pScrn->virtualY;
	} else {
	  height = pScrn->virtualY;
	  width = pScrn->virtualX;
	}

	if(fPtr->rotate && !fPtr->PointerMoved) {
		fPtr->PointerMoved = pScrn->PointerMoved;
		pScrn->PointerMoved = FBDevPointerMoved;
	}

	/* shadowfb */
	if (fPtr->shadowFB) {
		if ((fPtr->shadowmem = shadowAlloc(width, height,
						   pScrn->bitsPerPixel)) == NULL) {
		xf86DrvMsg(scrnIndex,X_ERROR,
			   "Allocation of shadow memory failed\n");
		return FALSE;
	}

		fPtr->fbstart   = fPtr->shadowmem;
	} else {
		fPtr->shadowmem = NULL;
		fPtr->fbstart   = fPtr->fbmem + fPtr->fboff;
	}

689
	switch ((type = fbdevHWGetType(pScrn)))
690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
	{
#ifdef USE_AFB
	case FBDEVHW_PLANES:
		if (fPtr->rotate)
		{
		  xf86DrvMsg(scrnIndex, X_ERROR,
			     "Internal error: Rotate not supported for afb\n");
		  ret = FALSE;
		  break;
		}
		if (fPtr->shadowFB)
		{
		  xf86DrvMsg(scrnIndex, X_ERROR,
			     "Internal error: Shadow framebuffer not supported for afb\n");
		  ret = FALSE;
		  break;
		}
		ret = afbScreenInit
			(pScreen, fPtr->fbstart, pScrn->virtualX, pScrn->virtualY,
			 pScrn->xDpi, pScrn->yDpi, pScrn->displayWidth);
		break;
#endif
	case FBDEVHW_PACKED_PIXELS:
		switch (pScrn->bitsPerPixel) {
		case 8:
		case 16:
		case 24:
		case 32:
			ret = fbScreenInit(pScreen, fPtr->fbstart, width, height,
					   pScrn->xDpi, pScrn->yDpi, pScrn->displayWidth, pScrn->bitsPerPixel);
			init_picture = 1;
			break;
	 	default:
			xf86DrvMsg(scrnIndex, X_ERROR,
				   "Internal error: invalid bpp (%d) in FBDevScreenInit\n",
				   pScrn->bitsPerPixel);
			ret = FALSE;
			break;
		}
		break;
	case FBDEVHW_INTERLEAVED_PLANES:
		/* This should never happen ...
		* we should check for this much much earlier ... */
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: Text mode is not supprted by drivers/fbdev.\n"
		"Comment: Why do you want to run the X in TEXT mode anyway ?");
		ret = FALSE;
		break;
	case FBDEVHW_TEXT:
		/* This should never happen ...
		* we should check for this much much earlier ... */
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: Text mode is not supprted by drivers/fbdev.\n"
		"Comment: Why do you want to run the X in TEXT mode anyway ?");
		ret = FALSE;
		break;
	case FBDEVHW_VGA_PLANES:
		/* Not supported yet */
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: EGA/VGA Planes are not supprted"
		" yet by drivers/fbdev.");
		ret = FALSE;
		break;
	default:
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: fbdev type (%d) unsupported in"
756
		" FBDevScreenInit\n", type);
757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
		ret = FALSE;
		break;
	}
	if (!ret)
		return FALSE;

	if (pScrn->bitsPerPixel > 8) {
		/* Fixup RGB ordering */
		visual = pScreen->visuals + pScreen->numVisuals;
		while (--visual >= pScreen->visuals) {
			if ((visual->class | DynamicClass) == DirectColor) {
				visual->offsetRed   = pScrn->offset.red;
				visual->offsetGreen = pScrn->offset.green;
				visual->offsetBlue  = pScrn->offset.blue;
				visual->redMask     = pScrn->mask.red;
				visual->greenMask   = pScrn->mask.green;
				visual->blueMask    = pScrn->mask.blue;
			}
		}
	}

	/* must be after RGB ordering fixed */
	if (init_picture && !fbPictureInit(pScreen, NULL, 0))
		xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
			   "RENDER extension initialisation failed.\n");

	if (fPtr->shadowFB && 
	    (!shadowSetup(pScreen) || !shadowAdd(pScreen, NULL,
	      fPtr->rotate ? shadowUpdateRotatePacked : shadowUpdatePacked,
	      FBDevWindowLinear, fPtr->rotate, NULL)) ) {
	    xf86DrvMsg(scrnIndex, X_ERROR,
		       "Shadow framebuffer initialization failed.\n");
	    return FALSE;
	}

	if (!fPtr->rotate)
	  FBDevDGAInit(pScrn, pScreen);
	else {
	  xf86DrvMsg(scrnIndex, X_INFO, "Rotated display, disabling DGA\n");
796 797
	  xf86DrvMsg(scrnIndex, X_INFO, "Enabling Driver rotation, disabling RandR\n");
	  xf86DisableRandR();
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	  if (pScrn->bitsPerPixel == 24)
	    xf86DrvMsg(scrnIndex, X_WARNING, "Rotation might be broken in 24 bpp\n");
	}

	xf86SetBlackWhitePixels(pScreen);
	miInitializeBackingStore(pScreen);
	xf86SetBackingStore(pScreen);

	/* software cursor */
	miDCInitialize(pScreen, xf86GetPointerScreenFuncs());

	/* colormap */
810
	switch ((type = fbdevHWGetType(pScrn)))
811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
	{
	/* XXX It would be simpler to use miCreateDefColormap() in all cases. */
#ifdef USE_AFB
	case FBDEVHW_PLANES:
		if (!afbCreateDefColormap(pScreen))
			return FALSE;
		break;
#endif
	case FBDEVHW_PACKED_PIXELS:
		if (!miCreateDefColormap(pScreen))
			return FALSE;
		break;
	case FBDEVHW_INTERLEAVED_PLANES:
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: invalid fbdev type (interleaved planes)"
		" in FBDevScreenInit\n");
		return FALSE;
	case FBDEVHW_TEXT:
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: invalid fbdev type (text)"
		" in FBDevScreenInit\n");
		return FALSE;
	case FBDEVHW_VGA_PLANES:
		xf86DrvMsg(scrnIndex, X_ERROR,
		"Internal error: invalid fbdev type (ega/vga planes)"
		" in FBDevScreenInit\n");
		return FALSE;
	default:
		xf86DrvMsg(scrnIndex, X_ERROR,
840 841
		"Internal error: invalid fbdev type (%d) in FBDevScreenInit\n",
		type);
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		return FALSE;
	}
	flags = CMAP_PALETTED_TRUECOLOR;
	if(!xf86HandleColormaps(pScreen, 256, 8, fbdevHWLoadPalette, NULL, flags))
		return FALSE;

	xf86DPMSInit(pScreen, fbdevHWDPMSSet, 0);

	pScreen->SaveScreen = fbdevHWSaveScreen;

	/* Wrap the current CloseScreen function */
	fPtr->CloseScreen = pScreen->CloseScreen;
	pScreen->CloseScreen = FBDevCloseScreen;

	{
	    XF86VideoAdaptorPtr *ptr;

	    int n = xf86XVListGenericAdaptors(pScrn,&ptr);
	    if (n) {
		xf86XVScreenInit(pScreen,ptr,n);
	    }
	}

	TRACE_EXIT("FBDevScreenInit");

	return TRUE;
}

static Bool
FBDevCloseScreen(int scrnIndex, ScreenPtr pScreen)
{
	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
	FBDevPtr fPtr = FBDEVPTR(pScrn);
	
	fbdevHWRestore(pScrn);
	fbdevHWUnmapVidmem(pScrn);
	if (fPtr->shadowmem)
		xfree(fPtr->shadowmem);
	if (fPtr->pDGAMode) {
	  xfree(fPtr->pDGAMode);
	  fPtr->pDGAMode = NULL;
	  fPtr->nDGAMode = 0;
	}
	pScrn->vtSema = FALSE;

	pScreen->CloseScreen = fPtr->CloseScreen;
	return (*pScreen->CloseScreen)(scrnIndex, pScreen);
}



/***********************************************************************
 * Shadow stuff
 ***********************************************************************/

static void *
FBDevWindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
		 CARD32 *size, void *closure)
{
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    FBDevPtr fPtr = FBDEVPTR(pScrn);

    if (!pScrn->vtSema)
      return NULL;

    if (fPtr->lineLength)
      *size = fPtr->lineLength;
    else
      *size = fPtr->lineLength = fbdevHWGetLineLength(pScrn);

    return ((CARD8 *)fPtr->fbmem + fPtr->fboff + row * fPtr->lineLength + offset);
}

static void
FBDevPointerMoved(int index, int x, int y)
{
    ScrnInfoPtr pScrn = xf86Screens[index];
    FBDevPtr fPtr = FBDEVPTR(pScrn);
    int newX, newY;

    switch (fPtr->rotate)
    {
    case FBDEV_ROTATE_CW:
	/* 90 degrees CW rotation. */
	newX = pScrn->pScreen->height - y - 1;
	newY = x;
	break;

    case FBDEV_ROTATE_CCW:
	/* 90 degrees CCW rotation. */
	newX = y;
	newY = pScrn->pScreen->width - x - 1;
	break;

    case FBDEV_ROTATE_UD:
	/* 180 degrees UD rotation. */
	newX = pScrn->pScreen->width - x - 1;
	newY = pScrn->pScreen->height - y - 1;
	break;

    default:
	/* No rotation. */
	newX = x;
	newY = y;
	break;
    }

    /* Pass adjusted pointer coordinates to wrapped PointerMoved function. */
    (*fPtr->PointerMoved)(index, newX, newY);
}


/***********************************************************************
 * DGA stuff
 ***********************************************************************/
static Bool FBDevDGAOpenFramebuffer(ScrnInfoPtr pScrn, char **DeviceName,
				   unsigned char **ApertureBase,
				   int *ApertureSize, int *ApertureOffset,
				   int *flags);
static Bool FBDevDGASetMode(ScrnInfoPtr pScrn, DGAModePtr pDGAMode);
static void FBDevDGASetViewport(ScrnInfoPtr pScrn, int x, int y, int flags);

static Bool
FBDevDGAOpenFramebuffer(ScrnInfoPtr pScrn, char **DeviceName,
		       unsigned char **ApertureBase, int *ApertureSize,
		       int *ApertureOffset, int *flags)
{
    *DeviceName = NULL;		/* No special device */
    *ApertureBase = (unsigned char *)(pScrn->memPhysBase);
    *ApertureSize = pScrn->videoRam;
    *ApertureOffset = pScrn->fbOffset;
    *flags = 0;

    return TRUE;
}

static Bool
FBDevDGASetMode(ScrnInfoPtr pScrn, DGAModePtr pDGAMode)
{
    DisplayModePtr pMode;
    int scrnIdx = pScrn->pScreen->myNum;
    int frameX0, frameY0;

    if (pDGAMode) {
	pMode = pDGAMode->mode;
	frameX0 = frameY0 = 0;
    }
    else {
	if (!(pMode = pScrn->currentMode))
	    return TRUE;

	frameX0 = pScrn->frameX0;
	frameY0 = pScrn->frameY0;
    }

    if (!(*pScrn->SwitchMode)(scrnIdx, pMode, 0))
	return FALSE;
    (*pScrn->AdjustFrame)(scrnIdx, frameX0, frameY0, 0);

    return TRUE;
}

static void
FBDevDGASetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
{
    (*pScrn->AdjustFrame)(pScrn->pScreen->myNum, x, y, flags);
}

static int
FBDevDGAGetViewport(ScrnInfoPtr pScrn)
{
    return (0);
}

static DGAFunctionRec FBDevDGAFunctions =
{
    FBDevDGAOpenFramebuffer,
    NULL,       /* CloseFramebuffer */
    FBDevDGASetMode,
    FBDevDGASetViewport,
    FBDevDGAGetViewport,
    NULL,       /* Sync */
    NULL,       /* FillRect */
    NULL,       /* BlitRect */
    NULL,       /* BlitTransRect */
};

static void
FBDevDGAAddModes(ScrnInfoPtr pScrn)
{
    FBDevPtr fPtr = FBDEVPTR(pScrn);
    DisplayModePtr pMode = pScrn->modes;
    DGAModePtr pDGAMode;

    do {
	pDGAMode = xrealloc(fPtr->pDGAMode,
			    (fPtr->nDGAMode + 1) * sizeof(DGAModeRec));
	if (!pDGAMode)
	    break;

	fPtr->pDGAMode = pDGAMode;
	pDGAMode += fPtr->nDGAMode;
	(void)memset(pDGAMode, 0, sizeof(DGAModeRec));

	++fPtr->nDGAMode;
	pDGAMode->mode = pMode;
	pDGAMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
	pDGAMode->byteOrder = pScrn->imageByteOrder;
	pDGAMode->depth = pScrn->depth;
	pDGAMode->bitsPerPixel = pScrn->bitsPerPixel;
	pDGAMode->red_mask = pScrn->mask.red;
	pDGAMode->green_mask = pScrn->mask.green;
	pDGAMode->blue_mask = pScrn->mask.blue;
	pDGAMode->visualClass = pScrn->bitsPerPixel > 8 ?
	    TrueColor : PseudoColor;
	pDGAMode->xViewportStep = 1;
	pDGAMode->yViewportStep = 1;
	pDGAMode->viewportWidth = pMode->HDisplay;
	pDGAMode->viewportHeight = pMode->VDisplay;

	if (fPtr->lineLength)
	  pDGAMode->bytesPerScanline = fPtr->lineLength;
	else
	  pDGAMode->bytesPerScanline = fPtr->lineLength = fbdevHWGetLineLength(pScrn);

	pDGAMode->imageWidth = pMode->HDisplay;
	pDGAMode->imageHeight =  pMode->VDisplay;
	pDGAMode->pixmapWidth = pDGAMode->imageWidth;
	pDGAMode->pixmapHeight = pDGAMode->imageHeight;
	pDGAMode->maxViewportX = pScrn->virtualX -
				    pDGAMode->viewportWidth;
	pDGAMode->maxViewportY = pScrn->virtualY -
				    pDGAMode->viewportHeight;

	pDGAMode->address = fPtr->fbstart;

	pMode = pMode->next;
    } while (pMode != pScrn->modes);
}

static Bool
FBDevDGAInit(ScrnInfoPtr pScrn, ScreenPtr pScreen)
{
    FBDevPtr fPtr = FBDEVPTR(pScrn);

    if (pScrn->depth < 8)
	return FALSE;

    if (!fPtr->nDGAMode)
	FBDevDGAAddModes(pScrn);

    return (DGAInit(pScreen, &FBDevDGAFunctions,
	    fPtr->pDGAMode, fPtr->nDGAMode));
}