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/* SVGAlib, Copyright 1993 Harm Hanemaayer */
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/* VGAlib version 1.2 - (c) 1993 Tommy Frandsen */
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/* partially copyrighted (C) 1993 by Hartmut Schirmer */
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/* Internal definitions. */
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#ifndef _LIBVGA_H
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#define _LIBVGA_H
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#include <string.h>
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#include <stdint.h>
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#include "ll/sys/cdefs.h"
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__BEGIN_DECLS
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//typedef unsigned int CARD32;
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//typedef unsigned short CARD16;
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//typedef unsigned char CARD8;
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/* --------------------- Macro definitions shared by library modules */
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/* VGA index register ports */
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#define CRT_IC  0x3D4           /* CRT Controller Index - color emulation */
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#define CRT_IM  0x3B4           /* CRT Controller Index - mono emulation */
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#define ATT_IW  0x3C0           /* Attribute Controller Index & Data Write Register */
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#define GRA_I   0x3CE           /* Graphics Controller Index */
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#define SEQ_I   0x3C4           /* Sequencer Index */
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#define PEL_IW  0x3C8           /* PEL Write Index */
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#define PEL_IR  0x3C7           /* PEL Read Index */
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/* VGA data register ports */
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#define CRT_DC  0x3D5           /* CRT Controller Data Register - color emulation */
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#define CRT_DM  0x3B5           /* CRT Controller Data Register - mono emulation */
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#define ATT_R   0x3C1           /* Attribute Controller Data Read Register */
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#define GRA_D   0x3CF           /* Graphics Controller Data Register */
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#define SEQ_D   0x3C5           /* Sequencer Data Register */
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#define MIS_R   0x3CC           /* Misc Output Read Register */
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#define MIS_W   0x3C2           /* Misc Output Write Register */
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#define IS1_RC  0x3DA           /* Input Status Register 1 - color emulation */
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#define IS1_RM  0x3BA           /* Input Status Register 1 - mono emulation */
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#define PEL_D   0x3C9           /* PEL Data Register */
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#define PEL_MSK 0x3C6           /* PEL mask register */
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/* 8514/MACH regs we need outside of the mach32 driver.. */
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#define PEL8514_D       0x2ED
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#define PEL8514_IW      0x2EC
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#define PEL8514_IR      0x2EB
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#define PEL8514_MSK     0x2EA
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/* EGA-specific registers */
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#define GRA_E0  0x3CC           /* Graphics enable processor 0 */
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#define GRA_E1  0x3CA           /* Graphics enable processor 1 */
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/* standard VGA indexes max counts */
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#define CRT_C   24              /* 24 CRT Controller Registers */
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#define ATT_C   21              /* 21 Attribute Controller Registers */
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#define GRA_C   9               /* 9  Graphics Controller Registers */
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#define SEQ_C   5               /* 5  Sequencer Registers */
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#define MIS_C   1               /* 1  Misc Output Register */
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/* VGA registers saving indexes */
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#define CRT     0               /* CRT Controller Registers start */
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#define ATT     (CRT+CRT_C)     /* Attribute Controller Registers start */
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#define GRA     (ATT+ATT_C)     /* Graphics Controller Registers start */
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#define SEQ     (GRA+GRA_C)     /* Sequencer Registers */
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#define MIS     (SEQ+SEQ_C)     /* General Registers */
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#define EXT     (MIS+MIS_C)     /* SVGA Extended Registers */
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/* Shorthands for chipset (driver) specific calls */
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#define chipset_saveregs __svgalib_driverspecs->saveregs
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#define chipset_setregs __svgalib_driverspecs->setregs
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#define chipset_unlock __svgalib_driverspecs->unlock
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#define chipset_test __svgalib_driverspecs->test
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#define chipset_setpage __svgalib_driverspecs->__svgalib_setpage
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#define chipset_setmode __svgalib_driverspecs->setmode
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#define chipset_modeavailable __svgalib_driverspecs->modeavailable
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#define chipset_getmodeinfo __svgalib_driverspecs->getmodeinfo
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#define chipset_cursor __svgalib_driverspecs->cursor
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/* Shorthands for internal variables and functions */
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#define CI      __svgalib_cur_info
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#define SM      __svgalib_sparse_mem
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#define GM      __svgalib_graph_mem
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#define CM      __svgalib_cur_mode
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#define VMEM    __svgalib_videomemoryused
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#define DREP    __svgalib_driver_report
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#define CRITICAL __svgalib_critical
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#define COL     __svgalib_cur_color
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#define CHIPSET __svgalib_chipset
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#define SCREENON __svgalib_screenon
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#define MODEX   __svgalib_modeX
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#define MODEFLAGS __svgalib_modeflags
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#define infotable __svgalib_infotable
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#define SVGADRV          2
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#define STDVGADRV        1
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#define STDVGAMODE(mode) (chipset_modeavailable(mode) == STDVGADRV)
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#define SVGAMODE(mode)   (chipset_modeavailable(mode) == SVGADRV)
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#define GRAPH_BASE 0xA0000
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#define FONT_BASE  0xA0000
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#define GRAPH_SIZE 0x10000
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#define FONT_SIZE  (0x2000 * 4) /* 2.0.x kernel can use 2 512 char. fonts */
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#define GPLANE16   G640x350x16
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/* graphics mode information */
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struct info {
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    int xdim;
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    int ydim;
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    int colors;
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    int xbytes;
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    int bytesperpixel;
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};
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/* --------------------- Variable definitions shared by library modules */
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#define BANKED_POINTER __svgalib_banked_pointer
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#define LINEAR_POINTER __svgalib_linear_pointer
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#define MMIO_POINTER __svgalib_mmio_pointer
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extern int __svgalib_CRT_I;             /* current CRT index register address */
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extern int __svgalib_CRT_D;             /* current CRT data register address */
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extern int __svgalib_IS1_R;             /* current input status register address */
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extern uint8_t * BANKED_POINTER, * LINEAR_POINTER;
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extern uint8_t *MMIO_POINTER;
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extern uint8_t *SPARSE_MMIO;
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extern unsigned long __svgalib_banked_mem_base, __svgalib_banked_mem_size;
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extern unsigned long __svgalib_mmio_base, __svgalib_mmio_size;
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extern unsigned long __svgalib_linear_mem_base, __svgalib_linear_mem_size;
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extern unsigned long __svgalib_mmio_base, __svgalib_mmio_size;
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extern struct info CI;          /* current video parameters */
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extern int COL;                 /* current color            */
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extern int CM;                  /* current video mode       */
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extern struct info infotable[];
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extern int SCREENON;            /* screen visible if != 0 */
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extern unsigned long __svgalib_graph_base;
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extern unsigned char *GM;       /* graphics memory frame */
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extern int MODEX;               /* TRUE after vga_setmodeX() */
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extern int MODEFLAGS;           /* copy of flags of current modeinfo->flags */
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extern int __svgalib_mem_fd;
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extern int __svgalib_tty_fd;
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extern int __svgalib_nosigint;
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extern int __svgalib_mouse_fd;
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extern int __svgalib_kbd_fd;
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extern int __svgalib_runinbackground;
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extern int __svgalib_vgacolormode;
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extern unsigned char __svgalib_novga;
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extern unsigned char __svgalib_textprog;
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extern unsigned char __svgalib_secondary;
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extern unsigned char __svgalib_emulatepage;
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extern unsigned char __svgalib_novccontrol;
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extern unsigned char __svgalib_m_ignore_dx;
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extern unsigned char __svgalib_m_ignore_dy;
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extern unsigned char __svgalib_m_ignore_dz;
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extern char *__joystick_devicenames[4];
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extern int __svgalib_cursor_status;
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/* --------------------- Function definitions shared by library modules */
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extern int (*__svgalib_inmisc)(void);
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extern void (*__svgalib_outmisc)(int);
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extern int (*__svgalib_incrtc)(int);
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extern void (*__svgalib_outcrtc)(int,int);
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extern int (*__svgalib_inseq)(int);
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extern void (*__svgalib_outseq)(int,int);
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extern int  (*__svgalib_ingra)(int);
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extern void (*__svgalib_outgra)(int,int);
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extern int  (*__svgalib_inatt)(int);
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extern void (*__svgalib_outatt)(int,int);
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extern void (*__svgalib_attscreen)(int);
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extern void (*__svgalib_inpal)(int,int*,int*,int*);
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extern void (*__svgalib_outpal)(int,int,int,int);
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extern int (*__svgalib_inis1)(void);
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extern int __svgalib_setregs(const unsigned char *regs);
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extern int __svgalib_saveregs(unsigned char *regs);
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extern void __svgalib_dumpregs(const unsigned char regs[], int n);
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extern void __svgalib_get_perm(void);
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extern int __svgalib_getchipset(int set_chipset);
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extern int __svgalib_name2number(char *modename);
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extern void __svgalib_delay(void);
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extern int __svgalib_addmode(int xdim, int ydim, int cols, int xbytes, int bytespp);
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extern void __svgalib_waitvtactive(void);
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extern void __svgalib_open_devconsole(void);
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extern void (*__svgalib_mouse_eventhandler) (int, int, int, int, int, int, int);
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extern void (*__svgalib_keyboard_eventhandler) (int, int);
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extern void __joystick_flip_vc(int acquire);
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extern char *__svgalib_TextProg_argv[16]; /* should be enough */
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extern char *__svgalib_TextProg;
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extern int __svgalib_VESA_savebitmap;
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extern int __svgalib_VESA_textmode;
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extern unsigned char __svgalib_vesatext;
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extern int __svgalib_mapkeyname(const char *keyname);
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extern void __svgalib_mouse_update_keymap(void);
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extern int __svgalib_vgacolor(void);
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extern void __svgalib_cursor_restore(void);
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extern void map_mmio(void);
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extern void map_mem(void);
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extern void map_linear(unsigned long, unsigned long);
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extern void unmap_linear(unsigned long);
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extern void __svgalib_emul_setpage(int);
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#if 0 
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/* remove this part ? */
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extern void __svgalib_releasevt_signal(int n);
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extern void __svgalib_acquirevt_signal(int n);
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#endif
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#define gr_readb(off)           (((volatile uint8_t *)GM)[(off)])
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#define gr_readw(off)           (*(volatile uint16_t*)((GM)+(off)))
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#define gr_readl(off)           (*(volatile uint32_t*)((GM)+(off)))
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#define gr_writeb(v,off)        (GM[(off)] = (v))
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#define gr_writew(v,off)        (*(uint16_t*)((GM)+(off)) = (v))
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#define gr_writel(v,off)        (*(uint32_t*)((GM)+(off)) = (v))
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extern void port_out(int value, int port);
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extern void port_outw(int value, int port);
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extern void port_outl(int value, int port);
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extern void port_rep_outb(unsigned char* string, int length, int port);
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extern int port_in(int port);
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extern int port_inw(int port);
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extern int port_inl(int port);
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/* Note that the arguments of outb/w are reversed compared with the */
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/* kernel sources. The XFree86 drivers also use this format. */
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#undef inb
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#undef inw
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#undef inl
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#undef outb
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#undef outw
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#undef outl
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#define inb port_in
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#define inw port_inw
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#define inl port_inl
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#define outb(port, value) port_out(value, port)
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#define outw(port, value) port_outw(value, port)
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#define outl(port, value) port_outl(value, port)
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/* Background things */
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extern unsigned char *__svgalib_give_graph_red(void);
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extern unsigned char *__svgalib_give_graph_green(void);
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extern unsigned char *__svgalib_give_graph_blue(void);
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#define zero_sa_mask(maskptr) memset(maskptr, 0, sizeof(sigset_t))
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#if 1
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#define SVGALIB_ACQUIRE_SIG SIGUSR2
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#define SVGALIB_RELEASE_SIG SIGUSR1
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#else
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#define SVGALIB_ACQUIRE_SIG SIGUNUSED
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#define SVGALIB_RELEASE_SIG SIGPROF
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#endif
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//#define DEBUG_TRACE
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#ifdef DEBUG_TRACE
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#define DTP(x) cprintf x
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#else
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#define DTP(x)
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#endif
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#ifdef DEBUG
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#define DPRINTF cprintf
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#else
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#define DPRINTF
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#endif
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__END_DECLS
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#endif /* _LIBVGA_H */
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