/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86str.h,v 1.83 2001/11/30 12:11:55 eich Exp $ */

/*
 * Copyright (c) 1997-2000 by The XFree86 Project, Inc.
 */

/*
 * This file contains definitions of the public XFree86 data structures/types.
 * Any data structures that video drivers need to access should go here.
 */

#ifndef _XF86STR_H
#define _XF86STR_H

#include "misc.h"
#include "input.h"
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "xf86Module.h"
#include "xf86Opt.h"

/*
 * memType is of the size of the addressable memory (machine size)
 * usually unsigned long.
 */
typedef unsigned long memType;

/* Video mode flags */

typedef enum {
    V_PHSYNC	= 0x0001,
    V_NHSYNC	= 0x0002,
    V_PVSYNC	= 0x0004,
    V_NVSYNC	= 0x0008,
    V_INTERLACE	= 0x0010,
    V_DBLSCAN	= 0x0020,
    V_CSYNC	= 0x0040,
    V_PCSYNC	= 0x0080,
    V_NCSYNC	= 0x0100,
    V_HSKEW	= 0x0200,	/* hskew provided */
    V_BCAST	= 0x0400,
    V_PIXMUX	= 0x1000,
    V_DBLCLK	= 0x2000,
    V_CLKDIV2	= 0x4000
} ModeFlags;

typedef enum {
    INTERLACE_HALVE_V	= 0x0001	/* Halve V values for interlacing */
} CrtcAdjustFlags;

/* Flags passed to ChipValidMode() */
typedef enum {
    MODECHECK_INITIAL = 0,
    MODECHECK_FINAL   = 1
} ModeCheckFlags;

/* These are possible return values for xf86CheckMode() and ValidMode() */
typedef enum {
    MODE_OK	= 0,	/* Mode OK */
    MODE_HSYNC,		/* hsync out of range */
    MODE_VSYNC,		/* vsync out of range */
    MODE_H_ILLEGAL,	/* mode has illegal horizontal timings */
    MODE_V_ILLEGAL,	/* mode has illegal horizontal timings */
    MODE_BAD_WIDTH,	/* requires an unsupported linepitch */
    MODE_NOMODE,	/* no mode with a maching name */
    MODE_NO_INTERLACE,	/* interlaced mode not supported */
    MODE_NO_DBLESCAN,	/* doublescan mode not supported */
    MODE_NO_VSCAN,	/* multiscan mode not supported */
    MODE_MEM,		/* insufficient video memory */
    MODE_VIRTUAL_X,	/* mode width too large for specified virtual size */
    MODE_VIRTUAL_Y,	/* mode height too large for specified virtual size */
    MODE_MEM_VIRT,	/* insufficient video memory given virtual size */
    MODE_NOCLOCK,	/* no fixed clock available */
    MODE_CLOCK_HIGH,	/* clock required is too high */
    MODE_CLOCK_LOW,	/* clock required is too low */
    MODE_CLOCK_RANGE,	/* clock/mode isn't in a ClockRange */
    MODE_BAD_HVALUE,	/* horizontal timing was out of range */
    MODE_BAD_VVALUE,	/* vertical timing was out of range */
    MODE_BAD_VSCAN,	/* VScan value out of range */
    MODE_HSYNC_NARROW,	/* horizontal sync too narrow */
    MODE_HSYNC_WIDE,	/* horizontal sync too wide */
    MODE_HBLANK_NARROW,	/* horizontal blanking too narrow */
    MODE_HBLANK_WIDE,	/* horizontal blanking too wide */
    MODE_VSYNC_NARROW,	/* vertical sync too narrow */
    MODE_VSYNC_WIDE,	/* vertical sync too wide */
    MODE_VBLANK_NARROW,	/* vertical blanking too narrow */
    MODE_VBLANK_WIDE,	/* vertical blanking too wide */
    MODE_PANEL,         /* exceeds panel dimensions */
    MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
    MODE_ONE_WIDTH,     /* only one width is supported */
    MODE_ONE_HEIGHT,    /* only one height is supported */
    MODE_ONE_SIZE,      /* only one resolution is supported */
    MODE_BAD = -2,	/* unspecified reason */
    MODE_ERROR	= -1	/* error condition */
} ModeStatus;

# define M_T_BUILTIN 0x01        /* built-in mode */
# define M_T_CLOCK_C (0x02 | M_T_BUILTIN) /* built-in mode - configure clock */
# define M_T_CRTC_C  (0x04 | M_T_BUILTIN) /* built-in mode - configure CRTC  */
# define M_T_CLOCK_CRTC_C  (M_T_CLOCK_C | M_T_CRTC_C)
                               /* built-in mode - configure CRTC and clock */
# define M_T_DEFAULT 0x10	/* (VESA) default modes */

/* Video mode */
typedef struct _DisplayModeRec {
    struct _DisplayModeRec *	prev;
    struct _DisplayModeRec *	next;
    char *			name;		/* identifier for the mode */
    ModeStatus			status;
    int				type;
    
    /* These are the values that the user sees/provides */
    int				Clock;		/* pixel clock freq */
    int				HDisplay;	/* horizontal timing */
    int				HSyncStart;
    int				HSyncEnd;
    int				HTotal;
    int				HSkew;
    int				VDisplay;	/* vertical timing */
    int				VSyncStart;
    int				VSyncEnd;
    int				VTotal;
    int				VScan;
    int				Flags;

  /* These are the values the hardware uses */
    int				ClockIndex;
    int				SynthClock;	/* Actual clock freq to
					  	 * be programmed */
    int				CrtcHDisplay;
    int				CrtcHBlankStart;
    int				CrtcHSyncStart;
    int				CrtcHSyncEnd;
    int				CrtcHBlankEnd;
    int				CrtcHTotal;
    int				CrtcHSkew;
    int				CrtcVDisplay;
    int				CrtcVBlankStart;
    int				CrtcVSyncStart;
    int				CrtcVSyncEnd;
    int				CrtcVBlankEnd;
    int				CrtcVTotal;
    Bool			CrtcHAdjusted;
    Bool			CrtcVAdjusted;
    int				PrivSize;
    INT32 *			Private;
    int				PrivFlags;

    float			HSync, VRefresh;
} DisplayModeRec, *DisplayModePtr;

/* The monitor description */

#define MAX_HSYNC 8
#define MAX_VREFRESH 8

typedef struct { float hi, lo; } range;

typedef struct { CARD32 red, green, blue; } rgb;

typedef struct { float red, green, blue; } Gamma;

/* The permitted gamma range is 1 / GAMMA_MAX <= g <= GAMMA_MAX */
#define GAMMA_MAX	10.0
#define GAMMA_MIN	(1.0 / GAMMA_MAX)
#define GAMMA_ZERO	(GAMMA_MIN / 100.0)

typedef struct {
    char *		id;
    char *		vendor;
    char *		model;
    int			nHsync;
    range		hsync[MAX_HSYNC];
    int			nVrefresh;
    range		vrefresh[MAX_VREFRESH];
    DisplayModePtr	Modes;		/* Start of the monitor's mode list */
    DisplayModePtr	Last;		/* End of the monitor's mode list */
    Gamma		gamma;		/* Gamma of the monitor */
    int			widthmm;
    int			heightmm;
    pointer		options;
    pointer		DDC;
} MonRec, *MonPtr;

/* the list of clock ranges */
typedef struct x_ClockRange {
    struct x_ClockRange *next;
    int			minClock;
    int			maxClock;
    int			clockIndex;	/* -1 for programmable clocks */
    Bool		interlaceAllowed;
    Bool		doubleScanAllowed;
    int			ClockMulFactor;
    int			ClockDivFactor;
    int			PrivFlags;
} ClockRange, *ClockRangePtr;

/* Need to store the strategy with clockRange for VidMode extension */
typedef struct x_ClockRanges {
    struct x_ClockRanges *next;
    int			minClock;
    int			maxClock;
    int			clockIndex;	/* -1 for programmable clocks */
    Bool		interlaceAllowed;
    Bool		doubleScanAllowed;
    int			ClockMulFactor;
    int			ClockDivFactor;
    int			PrivFlags;
    int			strategy;
} ClockRanges, *ClockRangesPtr;

/*
 * The driver list struct.  This contains the information required for each
 * driver before a ScrnInfoRec has been allocated.
 */
typedef struct _DriverRec {
    int			driverVersion;
    char *		driverName;
    void		(*Identify)(int flags);
    Bool		(*Probe)(struct _DriverRec *drv, int flags);
    const OptionInfoRec * (*AvailableOptions)(int chipid, int bustype);
    pointer		module;
    int			refCount;
} DriverRec, *DriverPtr;

#ifdef XFree86LOADER
/*
 * The optional module list struct. This allows modules exporting helping
 * functions to configuration tools, the Xserver, or any other
 * application/module interested in such information.
 */
typedef struct _ModuleInfoRec {
    int			moduleVersion;
    char *		moduleName;
    pointer		module;
    int			refCount;
    const OptionInfoRec * (*AvailableOptions)(void *unused);
    pointer		unused[8];	/* leave some space for more fields */
} ModuleInfoRec, *ModuleInfoPtr;
#endif

/*
 * These are the private bus types.  New types can be added here.  Types
 * required for the public interface should be added to xf86str.h, with
 * function prototypes added to xf86.h.
 */

typedef enum {
    BUS_NONE,
    BUS_ISA,
    BUS_PCI,
    BUS_SBUS,
    BUS_last    /* Keep last */
} BusType;

typedef struct {
    int		bus;
    int		device;
    int		func;
} PciBusId;
    
typedef struct {
    unsigned int dummy;
} IsaBusId;

typedef struct {
    int		fbNum;
} SbusBusId;

typedef struct _bus {
    BusType type;
    union {
	IsaBusId isa;
	PciBusId pci;
	SbusBusId sbus;
    } id;
} BusRec, *BusPtr;

#define MAXCLOCKS   128
typedef enum {
    DAC_BPP8 = 0,
    DAC_BPP16,
    DAC_BPP24,
    DAC_BPP32,
    MAXDACSPEEDS
} DacSpeedIndex;
 
typedef struct {
   char *			identifier;
   char *			vendor;
   char *			board;
   char *			chipset;
   char *			ramdac;
   char *			driver;
   struct _confscreenrec *	myScreenSection;
   Bool				claimed;
   int				dacSpeeds[MAXDACSPEEDS];
   int				numclocks;
   int				clock[MAXCLOCKS];
   char *			clockchip;
   char *			busID;
   Bool				active;
   Bool				inUse;
   int				videoRam;
   int				textClockFreq;
   unsigned long		BiosBase;	/* Base address of video BIOS */
   unsigned long		MemBase;	/* Frame buffer base address */
   unsigned long		IOBase;
   int				chipID;
   int				chipRev;
   pointer			options;
   int                          irq;
   int                          screen;         /* For multi-CRTC cards */
} GDevRec, *GDevPtr;

typedef int (*FindIsaDevProc)(GDevPtr dev);

typedef struct {
   char *			identifier;
   char *			driver;
   pointer		 	commonOptions;
   pointer			extraOptions;
} IDevRec, *IDevPtr;

typedef struct {
    int			vendor;
    int			chipType;
    int			chipRev;
    int			subsysVendor;
    int			subsysCard;
    int			bus;
    int			device;
    int			func;
    int			class;
    int			subclass;
    int			interface;
    memType  	        memBase[6];
    memType  	        ioBase[6];
    int			size[6];
    unsigned char	type[6];
    memType   	        biosBase;
    int			biosSize;
    pointer		thisCard;
    Bool                validSize;
    Bool                validate;
    CARD32              listed_class;
} pciVideoRec, *pciVideoPtr;

typedef struct {
    int			frameX0;
    int			frameY0;
    int			virtualX;
    int			virtualY;
    int			depth;
    int			fbbpp;
    rgb			weight;
    rgb			blackColour;
    rgb			whiteColour;
    int			defaultVisual;
    char **		modes;
    pointer		options;
} DispRec, *DispPtr;

typedef struct _confxvportrec {
    char *		identifier;
    pointer		options;
} confXvPortRec, *confXvPortPtr;

typedef struct _confxvadaptrec {
    char *		identifier;
    int			numports;
    confXvPortPtr	ports;
    pointer		options;
} confXvAdaptorRec, *confXvAdaptorPtr;

typedef struct _confscreenrec {
    char *		id;
    int			screennum;
    int			defaultdepth;
    int			defaultbpp;
    int			defaultfbbpp;
    MonPtr		monitor;
    GDevPtr		device;
    int			numdisplays;
    DispPtr		displays;
    int			numxvadaptors;
    confXvAdaptorPtr	xvadaptors;
    pointer		options;
} confScreenRec, *confScreenPtr;

typedef enum {
    PosObsolete = -1,
    PosAbsolute = 0,
    PosRightOf,
    PosLeftOf,
    PosAbove,
    PosBelow,
    PosRelative
} PositionType;

typedef struct _screenlayoutrec {
    confScreenPtr	screen;
    char *		topname;
    confScreenPtr	top;
    char *		bottomname;
    confScreenPtr	bottom;
    char *		leftname;
    confScreenPtr	left;
    char *		rightname;
    confScreenPtr	right;
    PositionType	where;
    int			x;
    int			y;
    char *		refname;
    confScreenPtr	refscreen;
} screenLayoutRec, *screenLayoutPtr;

typedef struct _serverlayoutrec {
    char *		id;
    screenLayoutPtr	screens;
    GDevPtr		inactives;
    IDevPtr		inputs;
    pointer		options;
} serverLayoutRec, *serverLayoutPtr;

typedef struct _confdribufferrec {
    int                 count;
    int                 size;
    enum {
	XF86DRI_WC_HINT = 0x0001 /* Placeholder: not implemented */
    }                   flags;
} confDRIBufferRec, *confDRIBufferPtr;

typedef struct _confdrirec {
    int                 group;
    int                 mode;
    int                 bufs_count;
    confDRIBufferRec    *bufs;
} confDRIRec, *confDRIPtr;
    
/* These values should be adjusted when new fields are added to ScrnInfoRec */
#define NUM_RESERVED_INTS		16
#define NUM_RESERVED_POINTERS		15
#define NUM_RESERVED_FUNCS		16

typedef pointer (*funcPointer)(void);

/* Flags for driver messages */
typedef enum {
    X_PROBED,			/* Value was probed */
    X_CONFIG,			/* Value was given in the config file */
    X_DEFAULT,			/* Value is a default */
    X_CMDLINE,			/* Value was given on the command line */
    X_NOTICE,			/* Notice */
    X_ERROR,			/* Error message */
    X_WARNING,			/* Warning message */
    X_INFO,			/* Informational message */
    X_NONE,			/* No prefix */
    X_NOT_IMPLEMENTED		/* Not implemented */
} MessageType;

/* flags for depth 24 pixmap options */
typedef enum {
    Pix24DontCare = 0,
    Pix24Use24,
    Pix24Use32
} Pix24Flags;

/* Power management events: so far we only support APM */

typedef enum {
    XF86_APM_UNKNOWN = -1,
    XF86_APM_SYS_STANDBY,
    XF86_APM_SYS_SUSPEND,
    XF86_APM_CRITICAL_SUSPEND,
    XF86_APM_USER_STANDBY,
    XF86_APM_USER_SUSPEND,
    XF86_APM_STANDBY_RESUME,
    XF86_APM_NORMAL_RESUME,
    XF86_APM_CRITICAL_RESUME,
    XF86_APM_LOW_BATTERY,
    XF86_APM_POWER_STATUS_CHANGE,
    XF86_APM_UPDATE_TIME,
    XF86_APM_CAPABILITY_CHANGED,
    XF86_APM_STANDBY_FAILED,
    XF86_APM_SUSPEND_FAILED
} pmEvent;

typedef enum {
    PM_WAIT,
    PM_CONTINUE,
    PM_FAILED,
    PM_NONE
} pmWait;

/*
 * The IO access enabler struct. This contains the address for 
 * the IOEnable/IODisable funcs for their specific bus along
 * with a pointer to data needed by them
 */
typedef struct _AccessRec {
    void (*AccessDisable)(void *arg);
    void (*AccessEnable)(void *arg);
    void *arg;
} xf86AccessRec, *xf86AccessPtr;

typedef struct {
    xf86AccessPtr mem;
    xf86AccessPtr io;
    xf86AccessPtr io_mem;
} xf86SetAccessFuncRec, *xf86SetAccessFuncPtr;

/*  bus-access-related types */
typedef enum {
    NONE,
    IO,
    MEM_IO,
    MEM
} resType;

typedef struct _EntityAccessRec {
    xf86AccessPtr fallback;
    xf86AccessPtr pAccess;
    resType rt;
    pointer  busAcc;
    struct _EntityAccessRec *next;
} EntityAccessRec, *EntityAccessPtr;

typedef struct _CurrAccRec {
    EntityAccessPtr pMemAccess;
    EntityAccessPtr pIoAccess;
} xf86CurrentAccessRec, *xf86CurrentAccessPtr;

/* new RAC */

/* Resource Type values */
#define ResNone		((unsigned long)(-1))

#define ResMem		0x0001
#define ResIo		0x0002
#define ResIrq		0x0003
#define ResDma		0x0004
#define ResPciCfg	0x000e	/* PCI Configuration space */
#define ResPhysMask	0x000F

#define ResExclusive	0x0010
#define ResShared	0x0020
#define ResAny		0x0040
#define ResAccMask	0x0070
#define ResUnused	0x0080

#define ResUnusedOpr	0x0100
#define ResDisableOpr	0x0200
#define ResOprMask	0x0300

#define ResBlock	0x0400
#define ResSparse	0x0800
#define ResExtMask	0x0C00

#define ResEstimated	0x1000
#define ResInit 	0x2000
#define ResBios		0x4000
#define ResMiscMask	0xF000

#define ResBus          0x10000

#define ResDomain	0xff000000ul
#define ResTypeMask	(ResPhysMask | ResDomain)	/* For conflict check */

#define ResEnd		ResNone

#define ResExcMemBlock		(ResMem | ResExclusive | ResBlock)
#define ResExcIoBlock		(ResIo | ResExclusive | ResBlock)
#define ResShrMemBlock		(ResMem | ResShared | ResBlock)
#define ResShrIoBlock		(ResIo | ResShared | ResBlock)
#define ResExcUusdMemBlock	(ResMem | ResExclusive | ResUnused | ResBlock)
#define ResExcUusdIoBlock	(ResIo | ResExclusive | ResUnused | ResBlock)
#define ResShrUusdMemBlock	(ResMem | ResShared | ResUnused | ResBlock)
#define ResShrUusdIoBlock	(ResIo | ResShared | ResUnused | ResBlock)
#define ResExcUusdMemSparse	(ResMem | ResExclusive | ResUnused | ResSparse)
#define ResExcUusdIoSparse	(ResIo | ResExclusive | ResUnused | ResSparse)
#define ResShrUusdMemSparse	(ResMem | ResShared | ResUnused | ResSparse)
#define ResShrUusdIoSparse	(ResIo | ResShared | ResUnused | ResSparse)

#define ResExcMemSparse		(ResMem | ResExclusive | ResSparse)
#define ResExcIoSparse		(ResIo | ResExclusive | ResSparse)
#define ResShrMemSparse		(ResMem | ResShared | ResSparse)
#define ResShrIoSparse		(ResIo | ResShared | ResSparse)
#define ResUusdMemSparse	(ResMem | ResUnused | ResSparse)
#define ResUusdIoSparse		(ResIo | ResUnused | ResSparse)

#define ResIsMem(r)		(((r)->type & ResPhysMask) == ResMem)
#define ResIsIo(r)		(((r)->type & ResPhysMask) == ResIo)
#define ResIsExclusive(r)	(((r)->type & ResAccMask) == ResExclusive)
#define ResIsShared(r)		(((r)->type & ResAccMask) == ResShared)
#define ResIsUnused(r)		(((r)->type & ResAccMask) == ResUnused)
#define ResIsBlock(r)		(((r)->type & ResExtMask) == ResBlock)
#define ResIsSparse(r)		(((r)->type & ResExtMask) == ResSparse)
#define ResIsEstimated(r)	(((r)->type & ResMiscMask) == ResEstimated)

typedef struct {
    unsigned long type;     /* shared, exclusive, unused etc. */
    memType a;
    memType b;
} resRange, *resList;

#define RANGE(r,u,v,t) {\
                       (r).a = (u);\
                       (r).b = (v);\
                       (r).type = (t);\
                       }

#define rBase a
#define rMask b
#define rBegin a
#define rEnd b

/* resource record */
typedef struct _resRec *resPtr;
typedef struct _resRec {
    resRange    val;
    int		entityIndex;	/* who owns the resource */
    resPtr	next;
} resRec;

#define sparse_base	val.rBase
#define sparse_mask	val.rMask
#define block_begin	val.rBegin
#define block_end	val.rEnd
#define res_type	val.type

typedef struct {
    int numChipset;
    resRange *resList;
} IsaChipsets;

typedef struct { 
    int numChipset;
    int PCIid;
    resRange *resList;
} PciChipsets;

/* Entity properties */
typedef void (*EntityProc)(int entityIndex,pointer private);

typedef struct _entityInfo {
    int index;
    BusRec location;
    int chipset;
    Bool active;
    resPtr resources;
    GDevPtr device;
    DriverPtr driver;
} EntityInfoRec, *EntityInfoPtr;

/* server states */

typedef enum {
    SETUP,
    OPERATING
} xf86State;

typedef enum {
    NOTIFY_SETUP_TRANSITION,
    NOTIFY_SETUP,
    NOTIFY_OPERATING,
    NOTIFY_OPERATING_TRANSITION,
    NOTIFY_ENABLE,
    NOTIFY_ENTER,
    NOTIFY_LEAVE
} xf86NotifyState;

typedef void (*xf86StateChangeNotificationCallbackFunc)(xf86NotifyState state,pointer);

/* DGA */

typedef struct {
   int num;		/* A unique identifier for the mode (num > 0) */
   DisplayModePtr mode;
   int flags;		/* DGA_CONCURRENT_ACCESS, etc... */
   int imageWidth;	/* linear accessible portion (pixels) */
   int imageHeight;
   int pixmapWidth;	/* Xlib accessible portion (pixels) */
   int pixmapHeight;	/* both fields ignored if no concurrent access */
   int bytesPerScanline; 
   int byteOrder;	/* MSBFirst, LSBFirst */
   int depth;		
   int bitsPerPixel;
   unsigned long red_mask;
   unsigned long green_mask;
   unsigned long blue_mask;
   short visualClass;
   int viewportWidth;
   int viewportHeight;
   int xViewportStep;	/* viewport position granularity */
   int yViewportStep;
   int maxViewportX;	/* max viewport origin */
   int maxViewportY;
   int viewportFlags;	/* types of page flipping possible */
   int offset;		/* offset into physical memory */
   unsigned char *address;	/* server's mapped framebuffer */
   int reserved1;
   int reserved2;
} DGAModeRec, *DGAModePtr;

typedef struct {
   DGAModePtr mode;
   PixmapPtr pPix;
} DGADeviceRec, *DGADevicePtr;

/*
 * Flags for driver Probe() functions.
 */
#define PROBE_DEFAULT	  0x00
#define PROBE_DETECT	  0x01
#define PROBE_TRYHARD	  0x02

/*
 * Driver entry point types
 */
typedef struct _ScrnInfoRec *ScrnInfoPtr;

typedef Bool xf86ProbeProc                (DriverPtr, int);
typedef Bool xf86PreInitProc              (ScrnInfoPtr, int);
typedef Bool xf86ScreenInitProc           (int, ScreenPtr, int, char**);
typedef Bool xf86SwitchModeProc           (int, DisplayModePtr, int);
typedef void xf86AdjustFrameProc          (int, int, int, int);
typedef Bool xf86EnterVTProc              (int, int);
typedef void xf86LeaveVTProc              (int, int);
typedef void xf86FreeScreenProc           (int, int);
typedef int  xf86ValidModeProc            (int, DisplayModePtr, Bool, int);
typedef void xf86EnableDisableFBAccessProc(int, Bool);
typedef int  xf86SetDGAModeProc           (int, int, DGADevicePtr);
typedef int  xf86ChangeGammaProc          (int, Gamma);
typedef void xf86PointerMovedProc         (int, int, int);
typedef Bool xf86PMEventProc              (int, pmEvent, Bool);

/*
 * ScrnInfoRec
 *
 * There is one of these for each screen, and it holds all the screen-specific
 * information.
 *
 * Note: the size and layout must be kept the same across versions.  New
 * fields are to be added in place of the "reserved*" fields.  No fields
 * are to be dependent on compile-time defines.
 */


typedef struct _ScrnInfoRec {
    int			driverVersion;
    char *		driverName;		/* canonical name used in */
						/* the config file */   
    ScreenPtr		pScreen;		/* Pointer to the ScreenRec */
    int			scrnIndex;		/* Number of this screen */
    Bool		configured;		/* Is this screen valid */ 
    int			origIndex;		/* initial number assigned to
						 * this screen before
						 * finalising the number of
						 * available screens */

    /* Display-wide screenInfo values needed by this screen */
    int			imageByteOrder;
    int			bitmapScanlineUnit;
    int			bitmapScanlinePad;
    int			bitmapBitOrder;
    int			numFormats;
    PixmapFormatRec	formats[MAXFORMATS];
    PixmapFormatRec	fbFormat;

    int			bitsPerPixel;		/* fb bpp */
    Pix24Flags		pixmap24;		/* pixmap pref for depth 24 */
    int			depth;			/* depth of default visual */
    MessageType		depthFrom;		/* set from config? */
    MessageType		bitsPerPixelFrom;	/* set from config? */
    rgb			weight;			/* r/g/b weights */
    rgb			mask;			/* rgb masks */
    rgb			offset;			/* rgb offsets */
    int			rgbBits;		/* Number of bits in r/g/b */
    Gamma		gamma;			/* Gamma of the monitor */
    int			defaultVisual;		/* default visual class */
    int			maxHValue;		/* max horizontal timing */
    int			maxVValue;		/* max vertical timing value */
    int			virtualX;		/* Virtual width */
    int			virtualY; 		/* Virtual height */
    int			xInc;			/* Horizontal timing increment */
    MessageType		virtualFrom;		/* set from config? */
    int			displayWidth;		/* memory pitch */
    int			frameX0;		/* viewport position */
    int			frameY0;
    int			frameX1;
    int			frameY1;
    int			zoomLocked;		/* Disallow mode changes */
    DisplayModePtr	modePool;		/* list of compatible modes */
    DisplayModePtr	modes;			/* list of actual modes */
    DisplayModePtr	currentMode;		/* current mode
						 * This was previously
						 * overloaded with the modes
						 * field, which is a pointer
						 * into a circular list */
    confScreenPtr	confScreen;		/* Screen config info */
    MonPtr		monitor;		/* Monitor information */
    DispPtr		display;		/* Display information */
    int *		entityList;		/* List of device entities */
    int			numEntities;
    int			widthmm;		/* physical display dimensions
						 * in mm */
    int			heightmm;
    int			xDpi;			/* width DPI */
    int			yDpi;			/* height DPI */
    char *		name;			/* Name to prefix messages */
    pointer		driverPrivate;		/* Driver private area */
    DevUnion *		privates;		/* Other privates can hook in
						 * here */
    DriverPtr		drv;			/* xf86DriverList[] entry */
    pointer		module;			/* Pointer to module head */
    int			colorKey;
    int			overlayFlags;

    /* Some of these may be moved out of here into the driver private area */

    char *		chipset;		/* chipset name */
    char *		ramdac;			/* ramdac name */
    char *		clockchip;		/* clock name */
    Bool		progClock;		/* clock is programmable */
    int			numClocks;		/* number of clocks */
    int			clock[MAXCLOCKS];	/* list of clock frequencies */
    int			videoRam;		/* amount of video ram (kb) */
    unsigned long	biosBase;		/* Base address of video BIOS */
    unsigned long	memPhysBase;		/* Physical address of FB */
    unsigned long 	fbOffset;		/* Offset of FB in the above */
    unsigned long	ioBase;			/* I/O or MMIO base adderss */
    int			memClk;			/* memory clock */
    int			textClockFreq;		/* clock of text mode */
    Bool		flipPixels;		/* swap default black/white */
    pointer		options;

    int			chipID;
    int			chipRev;
    int			racMemFlags;
    int			racIoFlags;
    pointer		access;
    xf86CurrentAccessPtr CurrentAccess;
    resType		resourceType;
    pointer		busAccess;

    /* Allow screens to be enabled/disabled individually */
    Bool		vtSema;
    DevUnion		pixmapPrivate;		/* saved devPrivate from pixmap */
    
    /* hw cursor moves at SIGIO time */
    Bool		silkenMouse;

    /* Storage for clockRanges and adjustFlags for use with the VidMode ext */
    ClockRangesPtr	clockRanges;
    int			adjustFlags;
  
    /*
     * These can be used when the minor ABI version is incremented.
     * The NUM_* parameters must be reduced appropriately to keep the
     * structure size and alignment unchanged.
     */
    int			reservedInt[NUM_RESERVED_INTS];

    int *		entityInstanceList;
    pointer		reservedPtr[NUM_RESERVED_POINTERS];

    /*
     * Driver entry points.
     *
     */

    xf86ProbeProc			*Probe;
    xf86PreInitProc			*PreInit;
    xf86ScreenInitProc			*ScreenInit;
    xf86SwitchModeProc			*SwitchMode;
    xf86AdjustFrameProc			*AdjustFrame;
    xf86EnterVTProc			*EnterVT;
    xf86LeaveVTProc			*LeaveVT;
    xf86FreeScreenProc			*FreeScreen;
    xf86ValidModeProc			*ValidMode;
    xf86EnableDisableFBAccessProc	*EnableDisableFBAccess;
    xf86SetDGAModeProc			*SetDGAMode;
    xf86ChangeGammaProc			*ChangeGamma;
    xf86PointerMovedProc		*PointerMoved;
    xf86PMEventProc			*PMEvent;
    
    /*
     * This can be used when the minor ABI version is incremented.
     * The NUM_* parameter must be reduced appropriately to keep the
     * structure size and alignment unchanged.
     */
    funcPointer		reservedFuncs[NUM_RESERVED_FUNCS];

} ScrnInfoRec;


typedef struct {
   Bool (*OpenFramebuffer)(
	ScrnInfoPtr pScrn, 
	char **name,
	unsigned char **mem, 
	int *size,
	int *offset,
        int *extra
   );
   void	(*CloseFramebuffer)(ScrnInfoPtr pScrn);
   Bool (*SetMode)(ScrnInfoPtr pScrn, DGAModePtr pMode);
   void (*SetViewport)(ScrnInfoPtr pScrn, int x, int y, int flags);
   int  (*GetViewport)(ScrnInfoPtr pScrn);
   void (*Sync)(ScrnInfoPtr);
   void (*FillRect)(
	ScrnInfoPtr pScrn, 
	int x, int y, int w, int h, 
	unsigned long color
   );
   void (*BlitRect)(
	ScrnInfoPtr pScrn, 
	int srcx, int srcy, 
	int w, int h, 
	int dstx, int dsty
   );
   void (*BlitTransRect)(
	ScrnInfoPtr pScrn, 
	int srcx, int srcy, 
	int w, int h, 
	int dstx, int dsty,
	unsigned long color
   );
} DGAFunctionRec, *DGAFunctionPtr;

typedef struct {
    int			token;		/* id of the token */
    const char *	name;		/* token name */
} SymTabRec, *SymTabPtr;

/* flags for xf86LookupMode */
typedef enum {
    LOOKUP_DEFAULT		= 0,	/* Use default mode lookup method */
    LOOKUP_BEST_REFRESH,		/* Pick modes with best refresh */
    LOOKUP_CLOSEST_CLOCK,		/* Pick modes with the closest clock */
    LOOKUP_LIST_ORDER,			/* Pick first useful mode in list */
    LOOKUP_CLKDIV2		= 0x0100, /* Allow half clocks */
    LOOKUP_OPTIONAL_TOLERANCES	= 0x0200  /* Allow missing hsync/vrefresh */
} LookupModeFlags;

#define NoDepth24Support	0x00
#define Support24bppFb		0x01	/* 24bpp framebuffer supported */
#define Support32bppFb		0x02	/* 32bpp framebuffer supported */
#define SupportConvert24to32	0x04	/* Can convert 24bpp pixmap to 32bpp */
#define SupportConvert32to24	0x08	/* Can convert 32bpp pixmap to 24bpp */
#define PreferConvert24to32	0x10	/* prefer 24bpp pixmap to 32bpp conv */
#define PreferConvert32to24	0x20	/* prefer 32bpp pixmap to 24bpp conv */


/* For DPMS */
typedef void (*DPMSSetProcPtr)(ScrnInfoPtr, int, int);

/* Input handler proc */
typedef void (*InputHandlerProc)(int fd, pointer data);

/* These are used by xf86GetClocks */
#define CLK_REG_SAVE		-1
#define CLK_REG_RESTORE		-2

/* xf86Debug.c */ 
#ifdef BUILDDEBUG
typedef struct {
    long sec;
    long usec;
} xf86TsRec, *xf86TsPtr;
#endif

/*
 * misc constants
 */
#define INTERLACE_REFRESH_WEIGHT	1.5
#define SYNC_TOLERANCE		0.01	/* 1 percent */
#define CLOCK_TOLERANCE		2000	/* Clock matching tolerance (2MHz) */


#define OVERLAY_8_32_DUALFB	0x00000001
#define OVERLAY_8_24_DUALFB	0x00000002
#define OVERLAY_8_16_DUALFB	0x00000004
#define OVERLAY_8_32_PLANAR	0x00000008

#if 0
#define LD_RESOLV_IFDONE		0	/* only check if no more 
						   delays pending */
#define LD_RESOLV_NOW			1	/* finish one delay step */
#define LD_RESOLV_FORCE			2	/* force checking... */
#endif

#endif /* _XF86STR_H */
