path: root/hw/kdrive/src/kdrive.h

/*
 * Copyright © 1999 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _KDRIVE_H_
#define _KDRIVE_H_

#include <stdio.h>
#include <X11/X.h>
#define NEED_EVENTS
#include <X11/Xproto.h>
#include <X11/Xos.h>
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "servermd.h"
#include "mibstore.h"
#include "colormapst.h"
#include "gcstruct.h"
#include "input.h"
#include "mipointer.h"
#include "mi.h"
#include "dix.h"
#include "fb.h"
#include "fboverlay.h"
#include "shadow.h"
#include "randrstr.h"

#ifdef XKB
#include <X11/extensions/XKBstr.h>
#endif

extern WindowPtr    *WindowTable;

#define KD_DPMS_NORMAL	    0
#define KD_DPMS_STANDBY	    1
#define KD_DPMS_SUSPEND	    2
#define KD_DPMS_POWERDOWN   3
#define KD_DPMS_MAX	    KD_DPMS_POWERDOWN

#ifndef KD_MAX_FB
#define KD_MAX_FB   FB_OVERLAY_MAX
#endif

#ifndef KD_MAX_CARD_ADDRESS
#define KD_MAX_CARD_ADDRESS 8
#endif

#define Status int

/*
 * Configuration information per video card
 */

typedef struct _KdCardAttr {
    CARD32  io;
    CARD32  address[KD_MAX_CARD_ADDRESS];
    int	    naddr;

    /* PCI bus info */
    CARD16  vendorID;
    CARD16  deviceID;
    CARD8   domain;
    CARD8   bus;
    CARD8   slot;
    CARD8   func;
} KdCardAttr;

typedef struct _KdCardInfo {
    struct _KdCardFuncs	    *cfuncs;
    void		    *closure;
    KdCardAttr		    attr;
    void		    *driver;
    struct _KdScreenInfo    *screenList;
    int			    selected;
    struct _KdCardInfo	    *next;

    Bool		    needSync;
    int			    lastMarker;
} KdCardInfo;

extern KdCardInfo	*kdCardInfo;

/*
 * Configuration information per X screen
 */
typedef struct _KdFrameBuffer {
    CARD8	*frameBuffer;
    int		depth;
    int		bitsPerPixel;
    int		pixelStride;
    int		byteStride;
    Bool	shadow;
    unsigned long   visuals;
    Pixel       redMask, greenMask, blueMask;
    void	*closure;
} KdFrameBuffer;

typedef struct _KdOffscreenArea KdOffscreenArea;

typedef void (*KdOffscreenSaveProc) (ScreenPtr pScreen, KdOffscreenArea *area);

typedef enum _KdOffscreenState {
    KdOffscreenAvail,
    KdOffscreenRemovable,
    KdOffscreenLocked,
} KdOffscreenState;

struct _KdOffscreenArea {
    int			offset;
    int			save_offset;
    int			size;
    int			score;
    pointer		privData;
    
    KdOffscreenSaveProc save;

    KdOffscreenState	state;
    
   KdOffscreenArea	*next;
};

#define RR_Rotate_All	(RR_Rotate_0|RR_Rotate_90|RR_Rotate_180|RR_Rotate_270)
#define RR_Reflect_All	(RR_Reflect_X|RR_Reflect_Y)

typedef struct _KdScreenInfo {
    struct _KdScreenInfo    *next;
    KdCardInfo	*card;
    ScreenPtr	pScreen;
    void	*driver;
    Rotation	randr;	/* rotation and reflection */
    int		width;
    int		height;
    int		rate;
    int		width_mm;
    int		height_mm;
    int		subpixel_order;
    Bool        dumb;
    Bool        softCursor;
    int		mynum;
    DDXPointRec	origin;
    KdFrameBuffer   fb[KD_MAX_FB];
    CARD8	*memory_base;
    unsigned long   memory_size;
    unsigned long   off_screen_base;
} KdScreenInfo;

typedef struct _KdCardFuncs {
    Bool	(*cardinit) (KdCardInfo *); /* detect and map device */
    Bool	(*scrinit) (KdScreenInfo *);/* initialize screen information */
    Bool	(*initScreen) (ScreenPtr);  /* initialize ScreenRec */
    Bool	(*finishInitScreen) (ScreenPtr pScreen);
    Bool	(*createRes) (ScreenPtr);   /* create screen resources */
    void	(*preserve) (KdCardInfo *); /* save graphics card state */
    Bool        (*enable) (ScreenPtr);      /* set up for rendering */
    Bool	(*dpms) (ScreenPtr, int);   /* set DPMS screen saver */
    void        (*disable) (ScreenPtr);     /* turn off rendering */
    void	(*restore) (KdCardInfo *);  /* restore graphics card state */
    void	(*scrfini) (KdScreenInfo *);/* close down screen */
    void        (*cardfini) (KdCardInfo *); /* close down */

    Bool        (*initCursor) (ScreenPtr);      /* detect and map cursor */
    void        (*enableCursor) (ScreenPtr);    /* enable cursor */
    void        (*disableCursor) (ScreenPtr);   /* disable cursor */
    void        (*finiCursor) (ScreenPtr);      /* close down */
    void        (*recolorCursor) (ScreenPtr, int, xColorItem *);

    Bool        (*initAccel) (ScreenPtr);
    void        (*enableAccel) (ScreenPtr);
    void        (*disableAccel) (ScreenPtr);
    void        (*finiAccel) (ScreenPtr);

    void        (*getColors) (ScreenPtr, int, int, xColorItem *);
    void        (*putColors) (ScreenPtr, int, int, xColorItem *);

} KdCardFuncs;

#define KD_MAX_PSEUDO_DEPTH 8
#define KD_MAX_PSEUDO_SIZE	    (1 << KD_MAX_PSEUDO_DEPTH)

typedef struct {
    KdScreenInfo    *screen;
    KdCardInfo	    *card;

    Bool	    enabled;
    Bool	    closed;
    int		    bytesPerPixel[KD_MAX_FB];

    int		    dpmsState;
    
    KdOffscreenArea *off_screen_areas;

    ColormapPtr     pInstalledmap[KD_MAX_FB];         /* current colormap */
    xColorItem      systemPalette[KD_MAX_PSEUDO_SIZE];/* saved windows colors */

    CreateScreenResourcesProcPtr    CreateScreenResources;
    CloseScreenProcPtr  CloseScreen;
} KdPrivScreenRec, *KdPrivScreenPtr;

typedef enum _kdPointerState {
    start,
    button_1_pend,
    button_1_down,
    button_2_down,
    button_3_pend,
    button_3_down,
    synth_2_down_13,
    synth_2_down_3,
    synth_2_down_1,
    num_input_states
} KdPointerState;

#define KD_MAX_BUTTON  32

#define KD_KEYBOARD 1
#define KD_MOUSE 2
#define KD_TOUCHSCREEN 3

typedef struct _KdPointerInfo KdPointerInfo;

typedef struct _KdPointerDriver {
    char                    *name;
    Status                  (*Init)    (KdPointerInfo *);
    Status                  (*Enable)  (KdPointerInfo *);
    void                    (*Disable) (KdPointerInfo *);
    void                    (*Fini)    (KdPointerInfo *);
    struct _KdPointerDriver *next;
} KdPointerDriver;

struct _KdPointerInfo {
    DeviceIntPtr          dixdev;
    char                  *name;
    char                  *path;
    InputOption           *options;
    int                   inputClass;

    CARD8                 map[KD_MAX_BUTTON + 1];
    int                   nButtons;
    int                   nAxes;

    Bool                  emulateMiddleButton;
    unsigned long         emulationTimeout;
    int                   emulationDx, emulationDy;

    Bool                  timeoutPending;
    KdPointerState        mouseState;
    Bool                  eventHeld;
    struct {
        int type;
        int x;
        int y;
        int z;
        int flags;
        int absrel;
    } heldEvent;         
    unsigned char         buttonState;
    Bool                  transformCoordinates;
    int                   pressureThreshold;

    KdPointerDriver       *driver;
    void                  *driverPrivate;

    struct _KdPointerInfo *next;
};

extern int KdCurScreen;

void KdAddPointerDriver (KdPointerDriver *driver);
void KdRemovePointerDriver (KdPointerDriver *driver);
KdPointerInfo *KdNewPointer (void);
void KdFreePointer (KdPointerInfo *);
int KdAddPointer (KdPointerInfo *ki);
int KdAddConfigPointer (char *pointer);
void KdRemovePointer (KdPointerInfo *ki);


#define KD_KEY_COUNT 248
#define KD_MIN_KEYCODE  8
#define KD_MAX_KEYCODE  255
#define KD_MAX_WIDTH    4
#define KD_MAX_LENGTH   (KD_MAX_KEYCODE - KD_MIN_KEYCODE + 1)

typedef struct {
    KeySym modsym;
    int    modbit;
} KdKeySymModsRec;

extern const KeySym       kdDefaultKeymap[KD_MAX_LENGTH * KD_MAX_WIDTH];
extern const int          kdDefaultKeymapWidth;
extern const CARD8        kdDefaultModMap[MAP_LENGTH];
extern const KeySymsRec   kdDefaultKeySyms;

typedef struct _KdKeyboardInfo KdKeyboardInfo;

typedef struct _KdKeyboardDriver {
    char                  *name;
    Bool                  (*Init)    (KdKeyboardInfo *);
    Bool                  (*Enable)  (KdKeyboardInfo *);
    void                  (*Leds)    (KdKeyboardInfo *, int);
    void                  (*Bell)    (KdKeyboardInfo *, int, int, int);
    void                  (*Disable) (KdKeyboardInfo *);
    void                  (*Fini)    (KdKeyboardInfo *);
    struct _KdKeyboardDriver *next;
} KdKeyboardDriver;

struct _KdKeyboardInfo {
    struct _KdKeyboardInfo *next;
    DeviceIntPtr        dixdev;
    void                *closure;
    char                *name;
    char                *path;
    int                 inputClass;
#ifdef XKB
    XkbDescPtr          xkb;
    char                *xkbRules;
    char                *xkbModel;
    char                *xkbLayout;
    char                *xkbVariant;
    char                *xkbOptions;
#endif
    int                 LockLed;

    CARD8               keyState[KD_KEY_COUNT/8];
    int                 minScanCode;
    int                 maxScanCode;
    CARD8               modmap[MAP_LENGTH];
    KeySymsRec          keySyms; 

    int                 leds;
    int                 bellPitch;
    int                 bellDuration;
    InputOption         *options;

    KdKeyboardDriver    *driver;
    void                *driverPrivate;
};

void KdAddKeyboardDriver (KdKeyboardDriver *driver);
void KdRemoveKeyboardDriver (KdKeyboardDriver *driver);
KdKeyboardInfo *KdNewKeyboard (void);
void KdFreeKeyboard (KdKeyboardInfo *ki);
int KdAddConfigKeyboard (char *pointer);
int KdAddKeyboard (KdKeyboardInfo *ki);
void KdRemoveKeyboard (KdKeyboardInfo *ki);

typedef struct _KdOsFuncs {
    int		    (*Init) (void);
    void	    (*Enable) (void);
    Bool	    (*SpecialKey) (KeySym);
    void	    (*Disable) (void);
    void	    (*Fini) (void);
    void	    (*pollEvents) (void);
    void            (*Bell) (int, int, int);
} KdOsFuncs;

typedef enum _KdSyncPolarity {
    KdSyncNegative, KdSyncPositive
} KdSyncPolarity;

typedef struct _KdMonitorTiming {
    /* label */
    int		    horizontal;
    int		    vertical;
    int		    rate;
    /* pixel clock */
    int		    clock;  /* in KHz */
    /* horizontal timing */
    int		    hfp;    /* front porch */
    int		    hbp;    /* back porch */
    int		    hblank; /* blanking */
    KdSyncPolarity  hpol;   /* polarity */
    /* vertical timing */
    int		    vfp;    /* front porch */
    int		    vbp;    /* back porch */
    int		    vblank; /* blanking */
    KdSyncPolarity  vpol;   /* polarity */
} KdMonitorTiming;

extern const KdMonitorTiming	kdMonitorTimings[];
extern const int		kdNumMonitorTimings;

typedef struct _KdPointerMatrix {
    int	    matrix[2][3];
} KdPointerMatrix;

typedef struct _KaaTrapezoid {
    float tl, tr, ty;
    float bl, br, by;
} KaaTrapezoid;

typedef struct _KaaScreenInfo {
    int	        offsetAlign;
    int         pitchAlign;
    int		flags;

    int		(*markSync) (ScreenPtr pScreen);
    void	(*waitMarker) (ScreenPtr pScreen, int marker);

    Bool	(*PrepareSolid) (PixmapPtr	pPixmap,
				 int		alu,
				 Pixel		planemask,
				 Pixel		fg);
    void	(*Solid) (int x1, int y1, int x2, int y2);
    void	(*DoneSolid) (void);

    Bool	(*PrepareCopy) (PixmapPtr	pSrcPixmap,
				PixmapPtr	pDstPixmap,
				Bool		upsidedown,
				Bool		reverse,
				int		alu,
				Pixel		planemask);
    void	(*Copy) (int	srcX,
			 int	srcY,
			 int	dstX,
			 int	dstY,
			 int	width,
			 int	height);
    void	(*DoneCopy) (void);

    Bool        (*PrepareBlend) (int		op,
				 PicturePtr	pSrcPicture,
				 PicturePtr	pDstPicture,
				 PixmapPtr	pSrc,
				 PixmapPtr	pDst);
    void        (*Blend) (int	srcX,
			  int	srcY,
			  int	dstX,
			  int	dstY,
			  int	width,
			  int	height);
    void	(*DoneBlend) (void);

    Bool        (*CheckComposite) (int		op,
				   PicturePtr	pSrcPicture,
				   PicturePtr	pMaskPicture,
				   PicturePtr	pDstPicture);
    Bool        (*PrepareComposite) (int		op,
				     PicturePtr		pSrcPicture,
				     PicturePtr		pMaskPicture,
				     PicturePtr		pDstPicture,
				     PixmapPtr		pSrc,
				     PixmapPtr		pMask,
				     PixmapPtr		pDst);
    void        (*Composite) (int	srcX,
			     int	srcY,
			     int	maskX,
			     int	maskY,
			     int	dstX,
			     int	dstY,
			     int	width,
			     int	height);
    void	(*DoneComposite) (void);

    Bool	(*PrepareTrapezoids) (PicturePtr pDstPicture,
				      PixmapPtr pDst);
    void	(*Trapezoids) (KaaTrapezoid	 *traps,
			       int		 ntraps);
    void	(*DoneTrapezoids) (void);

    Bool        (*UploadToScreen) (PixmapPtr		pDst,
				   char			*src,
				   int			src_pitch);
    Bool        (*UploadToScratch) (PixmapPtr		pSrc,
				   PixmapPtr		pDst);
} KaaScreenInfoRec, *KaaScreenInfoPtr;

#define KAA_OFFSCREEN_PIXMAPS		(1 << 0)
#define KAA_OFFSCREEN_ALIGN_POT		(1 << 1)

/*
 * This is the only completely portable way to
 * compute this info.
 */

#ifndef BitsPerPixel
#define BitsPerPixel(d) (\
    PixmapWidthPaddingInfo[d].notPower2 ? \
    (PixmapWidthPaddingInfo[d].bytesPerPixel * 8) : \
    ((1 << PixmapWidthPaddingInfo[d].padBytesLog2) * 8 / \
    (PixmapWidthPaddingInfo[d].padRoundUp+1)))
#endif

extern DevPrivateKey	kdScreenPrivateKey;
extern unsigned long	kdGeneration;
extern Bool		kdEnabled;
extern Bool		kdSwitchPending;
extern Bool		kdEmulateMiddleButton;
extern Bool		kdDisableZaphod;
extern Bool		kdDontZap;
extern int		kdVirtualTerminal;
extern char		*kdSwitchCmd;
extern KdOsFuncs	*kdOsFuncs;

#define KdGetScreenPriv(pScreen) ((KdPrivScreenPtr) \
    dixLookupPrivate(&(pScreen)->devPrivates, kdScreenPrivateKey))
#define KdSetScreenPriv(pScreen,v) \
    dixSetPrivate(&(pScreen)->devPrivates, kdScreenPrivateKey, v)
#define KdScreenPriv(pScreen) KdPrivScreenPtr pScreenPriv = KdGetScreenPriv(pScreen)

/* knoop.c */
extern GCOps		kdNoopOps;

/* kcmap.c */
void
KdSetColormap (ScreenPtr pScreen, int fb);

void
KdEnableColormap (ScreenPtr pScreen);

void
KdDisableColormap (ScreenPtr pScreen);

void
KdInstallColormap (ColormapPtr pCmap);

void
KdUninstallColormap (ColormapPtr pCmap);

int
KdListInstalledColormaps (ScreenPtr pScreen, Colormap *pCmaps);

void
KdStoreColors (ColormapPtr pCmap, int ndef, xColorItem *pdefs);

/* kcurscol.c */
void
KdAllocateCursorPixels (ScreenPtr	pScreen,
			int		fb,
			CursorPtr	pCursor, 
			Pixel		*source,
			Pixel		*mask);

/* kdrive.c */
extern miPointerScreenFuncRec kdPointerScreenFuncs;

void
KdSetRootClip (ScreenPtr pScreen, BOOL enable);

void
KdDisableScreen (ScreenPtr pScreen);

void
KdDisableScreens (void);

Bool
KdEnableScreen (ScreenPtr pScreen);

void
KdEnableScreens (void);

void
KdSuspend (void);

void
KdResume (void);

void
KdProcessSwitch (void);

Rotation
KdAddRotation (Rotation a, Rotation b);

Rotation
KdSubRotation (Rotation a, Rotation b);

void
KdParseScreen (KdScreenInfo *screen,
	       char	    *arg);

char *
KdSaveString (char *str);

KdPointerInfo *
KdParsePointer (char *arg);

KdKeyboardInfo *
KdParseKeyboard (char *arg);

char *
KdParseFindNext (char *cur, char *delim, char *save, char *last);

void
KdParseRgba (char *rgba);

void
KdUseMsg (void);

int
KdProcessArgument (int argc, char **argv, int i);

void
KdOsInit (KdOsFuncs *pOsFuncs);

void
KdOsAddInputDrivers (void);

Bool
KdAllocatePrivates (ScreenPtr pScreen);

Bool
KdCreateScreenResources (ScreenPtr pScreen);

Bool
KdCloseScreen (int index, ScreenPtr pScreen);

Bool
KdSaveScreen (ScreenPtr pScreen, int on);

Bool
KdScreenInit(int index, ScreenPtr pScreen, int argc, char **argv);

void
KdInitScreen (ScreenInfo    *pScreenInfo,
	      KdScreenInfo  *screen,
	      int	    argc,
	      char	    **argv);

void
KdInitCard (ScreenInfo	    *pScreenInfo,
	    KdCardInfo	    *card,
	    int		    argc,
	    char	    **argv);

void
KdInitOutput (ScreenInfo    *pScreenInfo,
	      int	    argc,
	      char	    **argv);
 
void
KdSetSubpixelOrder (ScreenPtr pScreen, Rotation randr);

void
KdBacktrace (int signum);
    
/* kinfo.c */
KdCardInfo *
KdCardInfoAdd (KdCardFuncs  *funcs,
	       KdCardAttr   *attr,
	       void	    *closure);

KdCardInfo *
KdCardInfoLast (void);

void
KdCardInfoDispose (KdCardInfo *ci);

KdScreenInfo *
KdScreenInfoAdd (KdCardInfo *ci);

void
KdScreenInfoDispose (KdScreenInfo *si);


/* kinput.c */
void
KdInitInput(void);

void
KdAddPointerDriver(KdPointerDriver *);

void
KdAddKeyboardDriver(KdKeyboardDriver *);

Bool
KdRegisterFd (int fd, void (*read) (int fd, void *closure), void *closure);

void
KdUnregisterFds (void *closure, Bool do_close);

void
KdUnregisterFd (void *closure, int fd, Bool do_close);

void
KdEnqueueKeyboardEvent(KdKeyboardInfo *ki, unsigned char scan_code,
                    unsigned char is_up);

#define KD_BUTTON_1	0x01
#define KD_BUTTON_2	0x02
#define KD_BUTTON_3	0x04
#define KD_BUTTON_4	0x08
#define KD_BUTTON_5	0x10
#define KD_BUTTON_8	0x80
#define KD_MOUSE_DELTA	0x80000000

void
KdEnqueuePointerEvent(KdPointerInfo *pi, unsigned long flags, int rx, int ry,
                      int rz);

void
_KdEnqueuePointerEvent(KdPointerInfo *pi, int type, int x, int y, int z,
                       int b, int absrel, Bool force);

void
KdReleaseAllKeys (void);
    
void
KdSetLed (KdKeyboardInfo *ki, int led, Bool on);

void
KdSetPointerMatrix (KdPointerMatrix *pointer);

void
KdComputePointerMatrix (KdPointerMatrix *pointer, Rotation randr, int width, int height);

void
KdScreenToPointerCoords (int *x, int *y);

void
KdBlockHandler (int		screen,
		pointer		blockData,
		pointer		timeout,
		pointer		readmask);

void
KdWakeupHandler (int		screen, 
		 pointer    	data,
		 unsigned long	result,
		 pointer	readmask);

void
KdDisableInput (void);

void
KdEnableInput (void);

void
ProcessInputEvents (void);

void
KdRingBell (KdKeyboardInfo      *ki,
            int                 volume,
            int                 pitch,
            int                 duration);

extern KdPointerDriver	LinuxMouseDriver;
extern KdPointerDriver	LinuxEvdevMouseDriver;
extern KdPointerDriver	Ps2MouseDriver;
extern KdPointerDriver	BusMouseDriver;
extern KdPointerDriver	MsMouseDriver;
extern KdPointerDriver	TsDriver;
extern KdKeyboardDriver	LinuxKeyboardDriver;
extern KdKeyboardDriver LinuxEvdevKeyboardDriver;
extern KdOsFuncs	LinuxFuncs;

extern KdPointerDriver	VxWorksMouseDriver;
extern KdKeyboardDriver	VxWorksKeyboardDriver;
extern KdOsFuncs	VxWorksFuncs;

/* kmap.c */

#define KD_MAPPED_MODE_REGISTERS    0
#define KD_MAPPED_MODE_FRAMEBUFFER  1

void *
KdMapDevice (CARD32 addr, CARD32 size);

void
KdUnmapDevice (void *addr, CARD32 size);

void
KdSetMappedMode (CARD32 addr, CARD32 size, int mode);

void
KdResetMappedMode (CARD32 addr, CARD32 size, int mode);

/* kmode.c */
const KdMonitorTiming *
KdFindMode (KdScreenInfo    *screen,
	    Bool	    (*supported) (KdScreenInfo *,
					  const KdMonitorTiming *));

Bool
KdTuneMode (KdScreenInfo    *screen,
	    Bool	    (*usable) (KdScreenInfo *),
	    Bool	    (*supported) (KdScreenInfo *,
					  const KdMonitorTiming *));

#ifdef RANDR
Bool
KdRandRGetInfo (ScreenPtr pScreen, 
		int randr,
		Bool (*supported) (ScreenPtr pScreen, 
				   const KdMonitorTiming *));

const KdMonitorTiming *
KdRandRGetTiming (ScreenPtr	    pScreen,
		  Bool		    (*supported) (ScreenPtr pScreen, 
						  const KdMonitorTiming *),
		  int		    rate,
		  RRScreenSizePtr   pSize);
#endif

/* kshadow.c */
Bool
KdShadowFbAlloc (KdScreenInfo *screen, int fb, Bool rotate);

void
KdShadowFbFree (KdScreenInfo *screen, int fb);

Bool
KdShadowSet (ScreenPtr pScreen, int randr, ShadowUpdateProc update, ShadowWindowProc window);
    
void
KdShadowUnset (ScreenPtr pScreen);

/* ktest.c */
Bool
KdFrameBufferValid (CARD8 *base, int size);

int
KdFrameBufferSize (CARD8 *base, int max);

/* koffscreen.c */

Bool
KdOffscreenInit (ScreenPtr pScreen);

KdOffscreenArea *
KdOffscreenAlloc (ScreenPtr pScreen, int size, int align,
		  Bool locked,
		  KdOffscreenSaveProc save,
		  pointer privData);

KdOffscreenArea *
KdOffscreenFree (ScreenPtr pScreen, KdOffscreenArea *area);

void
KdOffscreenSwapOut (ScreenPtr pScreen);

void
KdOffscreenSwapIn (ScreenPtr pScreen);

void
KdOffscreenFini (ScreenPtr pScreen);

/* function prototypes to be implemented by the drivers */
void
InitCard (char *name);

#endif /* _KDRIVE_H_ */