pc.h File Reference

#include "vga.h"

Include dependency graph for pc.h:

Go to the source code of this file.

Macros
#define	__inpb(Port)    READ_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)))
#define	__inpw(Port)    READ_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)))
#define	__outpb(Port, Value)    WRITE_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)), (UCHAR)(Value))
#define	__outpw(Port, Value)    WRITE_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)), (USHORT)(Value))

Functions
VOID	InitPaletteWithTable (_In_reads_(Count) const ULONG *Table, _In_ ULONG Count)
VOID	PrepareForSetPixel (VOID)
FORCEINLINE VOID	SetPixel (_In_ ULONG Left, _In_ ULONG Top, _In_ UCHAR Color)

Variables
ULONG_PTR	VgaRegisterBase
ULONG_PTR	VgaBase
const USHORT	AT_Initialization []
const USHORT	VGA_640x480 []
const UCHAR	PixelMask [8]

Macro Definition Documentation

__inpb

#define __inpb

(

Port

)

READ_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)))

Definition at line 18 of file pc.h.

__inpw

#define __inpw

(

Port

)

READ_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)))

Definition at line 21 of file pc.h.

__outpb

#define __outpb	(		Port,
			Value
	)		WRITE_PORT_UCHAR((PUCHAR)(VgaRegisterBase + (Port)), (UCHAR)(Value))

Definition at line 24 of file pc.h.

__outpw

#define __outpw	(		Port,
			Value
	)		WRITE_PORT_USHORT((PUSHORT)(VgaRegisterBase + (Port)), (USHORT)(Value))

Definition at line 27 of file pc.h.

Function Documentation

InitPaletteWithTable()

VOID InitPaletteWithTable	(	_In_reads_(Count) const ULONG *	Table,
		_In_ ULONG	Count
	)

Definition at line 220 of file bootvid.c.

{
    UNIMPLEMENTED;
}

PrepareForSetPixel()

VOID PrepareForSetPixel

(

VOID

)

Definition at line 90 of file vga.c.

{
    /* Switch to mode 10 */
    ReadWriteMode(10);
 
    /* Clear the 4 planes (we're already in unchained mode here) */
    __outpw(VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x0F02);
 
    /* Select the color don't care register */
    __outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, 7);
}

SetPixel()

FORCEINLINE VOID SetPixel	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ UCHAR	Color
	)

Definition at line 40 of file pc.h.

{
    PUCHAR PixelPosition;
 
    /* Calculate the pixel position */
    PixelPosition = (PUCHAR)(VgaBase + (Left >> 3) + (Top * (SCREEN_WIDTH / 8)));
 
    /* Select the bitmask register and write the mask */
    __outpw(VGA_BASE_IO_PORT + GRAPH_ADDRESS_PORT, (PixelMask[Left & 7] << 8) | IND_BIT_MASK);
 
    /* Dummy read to load latch registers */
    (VOID)READ_REGISTER_UCHAR(PixelPosition);
 
    /* Set the new color */
    WRITE_REGISTER_UCHAR(PixelPosition, Color);
}

Variable Documentation

AT_Initialization

const USHORT AT_Initialization[]

extern

Definition at line 16 of file bootdata.c.

Referenced by ResetDisplay(), and VidInitialize().

PixelMask

const UCHAR PixelMask[8]

extern

Definition at line 37 of file vga.c.

Referenced by ConsoleEfiGopIsPixelFormatSupported(), DisplayCharacter(), and SetPixel().

VGA_640x480

const USHORT VGA_640x480[]

extern

Definition at line 47 of file bootdata.c.

Referenced by ResetDisplay(), and VidInitialize().

VgaBase

ULONG_PTR VgaBase

extern

Definition at line 69 of file vga.c.

Referenced by DisplayCharacter(), DoScroll(), PreserveRow(), SetPixel(), VidInitialize(), VidScreenToBufferBlt(), and VidSolidColorFill().

VgaRegisterBase

ULONG_PTR VgaRegisterBase

extern

Definition at line 68 of file vga.c.

Referenced by VgaInterpretCmdStream(), and VidInitialize().