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/*

/////////////////////////////////////////////////////////////////////////////

// /usr1/CVS/rtems/c/src/libmisc/mw-fb/mw_fb.h,v 1.1 2000/08/30 08:21:24 joel Exp

//

// Copyright (c) 2000 - Rosimildo da Silva

//

// MODULE DESCRIPTION:

// Micro FrameBuffer interface for Embedded Systems.

//

// MODIFICATION/HISTORY:

//

// mw_fb.h,v

// Revision 1.1  2000/08/30 08:21:24  joel

// 2000-08-26  Rosimildo da Silva  <rdasilva@connecttel.com>

//

//      * Added generic Micro FrameBuffer interface for MicroWindows.

//      This interface allows MicroWindows to under RTEMS. A sample

//      driver has been developed for the pc386 BSP. See

//      pc386/fb_vga.c as a sample.

//      * Added Uniform Input Device interface for MicroWindows.

//      See PC386 bsp for sample drivers for mouse and keyboard (console).

//      * mw-bf: New directory.

//      * Makefile.am, configure.in, wrapup/Makefile.am: Account for mw-fb.

//      * mw-fb/Makefile.am: New file.

//      * mw-fb/mw_fb.c: New file.

//      * mw-fb/mw_fb.h: New file.

//      * mw-fb/mw_uid.c: New file.

//      * mw-fb/mw_uid.h: New file.

//

//

/////////////////////////////////////////////////////////////////////////////

*/

#ifndef _MW_FB_H

#define _MW_FB_H

#ifdef  __cplusplus

extern "C" {

#endif

/* ioctls

   0x46 is 'F'                                */

#define FB_SCREENINFO             0x4601

#define FB_GETPALETTE             0x4602

#define FB_SETPALETTE             0x4603

#define FB_EXEC_FUNCTION          0x4604

#define FB_TYPE_PACKED_PIXELS          0    /* Packed Pixels    */

#define FB_TYPE_PLANES                 1    /* Non interleaved planes */

#define FB_TYPE_INTERLEAVED_PLANES     2    /* Interleaved planes    */

#define FB_TYPE_TEXT                   3    /* Text/attributes    */

#define FB_TYPE_VGA_PLANES             4    /* EGA/VGA planes    */

#define FB_TYPE_VIRTUAL_BUFFER         5    /* Virtual Buffer */

#define FB_VISUAL_MONO01               0    /* Monochr. 1=Black 0=White */

#define FB_VISUAL_MONO10               1    /* Monochr. 1=White 0=Black */

#define FB_VISUAL_TRUECOLOR            2    /* True color    */

#define FB_VISUAL_PSEUDOCOLOR          3    /* Pseudo color (like atari) */

#define FB_VISUAL_DIRECTCOLOR          4    /* Direct color */

#define FB_VISUAL_STATIC_PSEUDOCOLOR   5    /* Pseudo color readonly */

#define FB_ACCEL_NONE                  0    /* no hardware accelerator    */

/* no dependency on any other header file */

typedef  unsigned long  __u32;

typedef  unsigned short __u16;

struct fb_screeninfo {

    __u32 xres;                  /* visible resolution        */

    __u32 yres;

    __u32 bits_per_pixel;        /* guess what            */

         __u32 line_length;          /* number of chars per line */

     volatile char *smem_start; /* Start of frame buffer mem  */

                                /* (physical address)         */

    __u32 smem_len;             /* Length of frame buffer mem */

    __u32 type;                 /* see FB_TYPE_*              */

    __u32 visual;               /* see FB_VISUAL_*            */

};

struct fb_cmap {

    __u32 start;                /* First entry    */

    __u32 len;                  /* Number of entries */

    __u16 *red;                 /* Red values    */

    __u16 *green;

    __u16 *blue;

    __u16 *transp;              /* transparency, can be NULL */

};

/* type of function to be executed at the driver level */

#define FB_FUNC_ENTER_GRAPHICS   0

#define FB_FUNC_EXIT_GRAPHICS    1

#define FB_FUNC_IS_DIRTY         2

#define FB_FUNC_GET_MODE         3

struct fb_exec_function

{

    int    func_no;

    void  *param;

};

/* Micro Framebuffer API Wrapper */

/*

 * This function returns the information regarding the display.

 * It is called just after the driver be opened to get all needed

 * information about the driver. No change in the mode of operation

 * of the driver is done with this call.

 */

extern int ufb_get_screen_info( int fd, struct fb_screeninfo *info );

/*

 * Returns the mode of the graphics subsystem

 */

extern int ufb_get_mode( int fd, int *mode );

/*

 * Returns the current collor pallete

 */

extern int ufb_get_palette( int fd, struct fb_cmap *color );

/*

 * Set the current collor pallete

 */

extern int ufb_set_palette( int fd, struct fb_cmap *color );

/*

 * Does all necessary initialization to put the device in

 * graphics mode

 */

extern int ufb_enter_graphics( int fd, int mode );

/*

 * Switch the device back to the default mode of operation.

 * In most cases it put the device back to plain text mode.

 */

extern int ufb_exit_graphics( int fd );

/*

 * Tell the driver that the "virtual buffer" is dirty, and an update

 * of it to the real device, maybe a serial/parallel LCD or whatever

 * is required

 */

extern int ufb_buffer_is_dirty( int fd );

/*

 * This function maps the physical ( kernel mode ) address of the framebuffer device

 * and maps it to the user space address.

 */

 int ufb_mmap_to_user_space( int fd, void **fb_addr, void *physical_addr, unsigned long size );

/*

 * This function unmaps memory of the FB from the user's space

 */

 int ufb_unmmap_from_user_space( int fd, void *addr );

#ifdef  __cplusplus

}

#endif

#endif /* _MW_FB_H */