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/* VGAlib version 1.2 - (c) 1993 Tommy Frandsen                    */

/*                                                                 */

/* This library is free software; you can redistribute it and/or   */

/* modify it without any restrictions. This library is distributed */

/* in the hope that it will be useful, but without any warranty.   */

/* Multi-chipset support Copyright (c) 1993 Harm Hanemaayer */

/* partially copyrighted (C) 1993 by Hartmut Schirmer */

#ifndef _DRIVER_H

#define _DRIVER_H

#include <stdio.h>

#include <stdarg.h>

#include "vga.h"

#include "libvga.h"

#include "timing.h"

#include "accel.h"

#include "io.h"

#define MAX_REGS 5000 /* VESA needs a lot of storage space */

extern int inrestore;

typedef struct {

    void (*savepalette)(unsigned char *red, unsigned char *green, unsigned char *blue);

    void (*restorepalette)(const unsigned char *red,

            const unsigned char *green, const unsigned char *blue);

    int  (*setpalette)(int index, int red, int green, int blue);

    void (*getpalette)(int index, int *red, int *green, int *blue);

    void (*savefont)(void);

    void (*restorefont)(void);

    int (*screenoff)(void);

    int (*screenon)(void);

    void (*waitretrace)(void);

    } Emulation;

typedef struct {

/* Basic functions. */

    int (*saveregs) (unsigned char regs[]);

    void (*setregs) (const unsigned char regs[], int mode);

    void (*unlock) (void);

    void (*lock) (void);

    int (*test) (void);

    int (*init) (int force, int par1, int par2);

    void (*__svgalib_setpage) (int page);

    void (*__svgalib_setrdpage) (int page);

    void (*__svgalib_setwrpage) (int page);

    int (*setmode) (int mode, int prv_mode);

    int (*modeavailable) (int mode);

    void (*setdisplaystart) (int address);

    void (*setlogicalwidth) (int width);

    void (*getmodeinfo) (int mode, vga_modeinfo * modeinfo);

/* Obsolete blit functions. */

    void (*bitblt) (int srcaddr, int destaddr, int w, int h, int pitch);

    void (*imageblt) (void *srcaddr, int destaddr, int w, int h, int pitch);

    void (*fillblt) (int destaddr, int w, int h, int pitch, int c);

    void (*hlinelistblt) (int ymin, int n, int *xmin, int *xmax, int pitch, int c);

    void (*bltwait) (void);

/* Other functions. */

    int (*ext_set) (unsigned what, va_list params);

    int (*accel) (unsigned operation, va_list params);

    int (*linear) (int op, int param);

    AccelSpecs *accelspecs;

    Emulation *emul;

    int (*cursor)(int cmd, int p1, int p2, int p3, int p4, void *p5);

} DriverSpecs;

extern DriverSpecs __svgalib_vga_driverspecs;

extern DriverSpecs __svgalib_neo_driverspecs;

extern DriverSpecs __svgalib_cirrus_driverspecs;

extern DriverSpecs __svgalib_et4000_driverspecs;

extern DriverSpecs __svgalib_tvga8900_driverspecs;

extern DriverSpecs __svgalib_oak_driverspecs;

extern DriverSpecs __svgalib_ega_driverspecs;

extern DriverSpecs __svgalib_s3_driverspecs;

extern DriverSpecs __svgalib_r128_driverspecs;

extern DriverSpecs __svgalib_mach32_driverspecs;

extern DriverSpecs __svgalib_et3000_driverspecs;

extern DriverSpecs __svgalib_gvga6400_driverspecs;

extern DriverSpecs __svgalib_ark_driverspecs;

extern DriverSpecs __svgalib_ati_driverspecs;

extern DriverSpecs __svgalib_ali_driverspecs;

extern DriverSpecs __svgalib_mach64_driverspecs;

extern DriverSpecs __svgalib_chips_driverspecs;

extern DriverSpecs __svgalib_apm_driverspecs;

extern DriverSpecs __svgalib_nv3_driverspecs;

extern DriverSpecs __svgalib_et6000_driverspecs;

extern DriverSpecs __svgalib_vesa_driverspecs;

extern DriverSpecs __svgalib_mx_driverspecs;

extern DriverSpecs __svgalib_paradise_driverspecs;

extern DriverSpecs __svgalib_rage_driverspecs;

extern DriverSpecs __svgalib_banshee_driverspecs;

extern DriverSpecs __svgalib_sis_driverspecs;

extern DriverSpecs __svgalib_i740_driverspecs;

extern DriverSpecs __svgalib_i810_driverspecs;

extern DriverSpecs __svgalib_laguna_driverspecs;

extern DriverSpecs __svgalib_fbdev_driverspecs;

extern DriverSpecs __svgalib_r128_driverspecs;

extern DriverSpecs __svgalib_g400_driverspecs;

extern DriverSpecs __svgalib_savage_driverspecs;

extern DriverSpecs __svgalib_mil_driverspecs;

extern DriverSpecs __svgalib_trident_driverspecs;

extern DriverSpecs __svgalib_rendition_driverspecs;

extern DriverSpecs __svgalib_g450c2_driverspecs;

extern DriverSpecs __svgalib_pm2_driverspecs;

extern DriverSpecs *__svgalib_driverspecs;

extern DriverSpecs *__svgalib_driverspecslist[];

enum {

    CHIPSET_SAVEREGS = 0, CHIPSET_SETREGS, CHIPSET_UNLOCK, CHIPSET_LOCK,

    CHIPSET_TEST, CHIPSET_INIT, CHIPSET_SETPAGE, CHIPSET_SETRDPAGE,

    CHIPSET_SETWRPAGE, CHIPSET_SETMODE,

    CHIPSET_MODEAVAILABLE, CHIPSET_SETDISPLAYSTART,

    CHIPSET_SETLOGICALWIDTH, CHIPSET_GETMODEINFO,

    CHIPSET_BITBLT, CHIPSET_IMAGEBLT, CHIPSET_FILLBLT,

    CHIPSET_HLINELISTBLT, CHIPSET_BLTWAIT,

    CHIPSET_EXT_SET, CHIPSET_ACCEL, CHIPSET_LINEAR

};

enum {

    LINEAR_QUERY_BASE, LINEAR_QUERY_GRANULARITY, LINEAR_QUERY_RANGE,

    LINEAR_ENABLE, LINEAR_DISABLE

};

enum { CURSOR_INIT, CURSOR_HIDE, CURSOR_SHOW, CURSOR_POSITION,

       CURSOR_SELECT, CURSOR_IMAGE, CURSOR_SAVE

};

typedef struct {

/* refresh ranges in Hz */

    unsigned min;

    unsigned max;

} RefreshRange;

extern int __svgalib_CRT_I;

extern int __svgalib_CRT_D;

extern int __svgalib_IS1_R;

extern int __svgalib_driver_report;     /* driverreport */

extern int __svgalib_videomemoryused;   /* videomemoryused */

extern int __svgalib_critical;

extern int __svgalib_chipset;

extern RefreshRange __svgalib_horizsync;

extern RefreshRange __svgalib_vertrefresh;

extern int __svgalib_bandwidth;

extern int __svgalib_grayscale;

extern int __svgalib_modeinfo_linearset;

extern const int __svgalib_max_modes;

void __svgalib_read_options(char **commands, char *(*func) (int ind, int mode, char **nptr));

char *__svgalib_token(char **nptr);

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

   ** A modetable holds a pair of values

   ** for each mode :

   **

   **    <mode number> <pointer to registers>

   **

   ** the last entry is marked by

   **  

   **    <any number>  <NULL>

*/

typedef struct {

    unsigned short mode_number;

    const unsigned char *regs;

} ModeTable;

#define DISABLE_MODE      ((unsigned char *)1)

#define OneModeEntry(res) {G##res,g##res##_regs}

#define DisableEntry(res) {G##res,DISABLE_MODE}

#define END_OF_MODE_TABLE { 0, NULL }

extern const unsigned char *__svgalib_mode_in_table(const ModeTable * modes, int mode);

#define LOOKUPMODE __svgalib_mode_in_table

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

extern int __svgalib_hicolor(int dac_type, int mode);

/* Enters hicolor mode - 0 for no hi, 1 for 15 bit, 2 for 16, 3 for 24 */

/* For any modes it doesn't know about, etc, it attempts to turn hicolor off. */

#define STD_DAC         0

#define HI15_DAC        1

#define HI16_DAC        2

#define TC24_DAC        3

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

   ** regextr.h  -  extract graphics modes and register information

   **               from C source file

 */

extern void __svgalib_readmodes(FILE * inp, ModeTable ** modes, int *dac, unsigned *clocks);

#endif