mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
643 lines
15 KiB
643 lines
15 KiB
/*++
|
|
|
|
Copyright (c) 1993 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
spvidvga.c
|
|
|
|
Abstract:
|
|
|
|
Text setup display support displays with a text mode.
|
|
|
|
Author:
|
|
|
|
Ted Miller (tedm) 2-Aug-1993
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
|
|
|
|
#include "spprecmp.h"
|
|
#include "ntddser.h"
|
|
#include <hdlsblk.h>
|
|
#include <hdlsterm.h>
|
|
#pragma hdrstop
|
|
|
|
//
|
|
// Vector for text-mode functions.
|
|
//
|
|
|
|
VIDEO_FUNCTION_VECTOR VgaVideoVector =
|
|
|
|
{
|
|
VgaDisplayString,
|
|
VgaClearRegion,
|
|
VgaSpecificInit,
|
|
VgaSpecificReInit,
|
|
VgaSpecificTerminate,
|
|
VgaSpecificInitPalette,
|
|
VgaSpecificScrollUp
|
|
};
|
|
|
|
|
|
|
|
BOOLEAN VgaInitialized = FALSE;
|
|
|
|
VOID
|
|
pSpvgaInitializeFont(
|
|
VOID
|
|
);
|
|
|
|
VOID
|
|
VgaSpecificInit(
|
|
IN PVIDEO_MODE_INFORMATION VideoModes,
|
|
IN ULONG NumberOfModes,
|
|
IN ULONG ModeSize
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
--*/
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
VIDEO_MODE VideoMode;
|
|
ULONG mode;
|
|
ULONG StandardMode = -1;
|
|
ULONG HeadlessMode = -1;
|
|
ULONG HeadlessLines = 0;
|
|
VIDEO_CURSOR_ATTRIBUTES VideoCursorAttributes;
|
|
|
|
PVIDEO_MODE_INFORMATION pVideoMode = &VideoModes[0];
|
|
|
|
|
|
if(VgaInitialized) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Find a mode that will work. If we are not running on a headless machine,
|
|
// then we search for standard 720x400 mode. Otherwise we try and find the
|
|
// mode that will result in a screen closest to the terminal height.
|
|
//
|
|
for(mode=0; mode<NumberOfModes; mode++) {
|
|
|
|
if(!(pVideoMode->AttributeFlags & VIDEO_MODE_GRAPHICS)
|
|
&& (pVideoMode->VisScreenWidth == 720)
|
|
&& (pVideoMode->VisScreenHeight == 400)) {
|
|
StandardMode = mode;
|
|
}
|
|
|
|
if ((HeadlessTerminalConnected) &&
|
|
((pVideoMode->VisScreenHeight / FontCharacterHeight) >= HEADLESS_SCREEN_HEIGHT)
|
|
&& (!(pVideoMode->AttributeFlags & VIDEO_MODE_GRAPHICS))) {
|
|
|
|
if ((HeadlessMode == -1) ||
|
|
((pVideoMode->VisScreenHeight / FontCharacterHeight) < HeadlessLines)) {
|
|
HeadlessMode = mode;
|
|
HeadlessLines = pVideoMode->VisScreenHeight / FontCharacterHeight;
|
|
}
|
|
}
|
|
|
|
pVideoMode = (PVIDEO_MODE_INFORMATION) (((PUCHAR) pVideoMode) + ModeSize);
|
|
}
|
|
|
|
//
|
|
// if we're in headless mode, we might not have found an acceptable mode
|
|
// first try to use the standard video mode if that's available.
|
|
// otherwise we have to assume that there isn't any video, etc.
|
|
//
|
|
if (HeadlessTerminalConnected && (HeadlessMode == -1)) {
|
|
if (StandardMode != -1) {
|
|
HeadlessMode = StandardMode;
|
|
} else {
|
|
KdPrintEx((
|
|
DPFLTR_SETUP_ID,
|
|
DPFLTR_ERROR_LEVEL,
|
|
"SETUP: no video mode present in headless mode. Run w/out video\n"));
|
|
}
|
|
}
|
|
|
|
if (((StandardMode == -1) && !HeadlessTerminalConnected)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Desired video mode not supported!\n"));
|
|
SpDisplayRawMessage(SP_SCRN_VIDEO_ERROR_RAW, 2, VIDEOBUG_BADMODE, 0);
|
|
while(TRUE); // loop forever
|
|
}
|
|
|
|
if (HeadlessTerminalConnected && (HeadlessMode == -1)) {
|
|
return;
|
|
}
|
|
|
|
pVideoMode = HeadlessTerminalConnected
|
|
? &VideoModes[HeadlessMode]
|
|
: &VideoModes[StandardMode];
|
|
|
|
|
|
VideoVars.VideoModeInfo = *pVideoMode;
|
|
|
|
//
|
|
// Set the desired mode.
|
|
//
|
|
VideoMode.RequestedMode = VideoVars.VideoModeInfo.ModeIndex;
|
|
|
|
Status = ZwDeviceIoControlFile(
|
|
VideoVars.hDisplay,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_VIDEO_SET_CURRENT_MODE,
|
|
&VideoMode,
|
|
sizeof(VideoMode),
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to set mode %u (status = %lx)\n",VideoMode.RequestedMode,Status));
|
|
SpDisplayRawMessage(SP_SCRN_VIDEO_ERROR_RAW, 2, VIDEOBUG_SETMODE, Status);
|
|
while(TRUE); // loop forever
|
|
}
|
|
|
|
pSpvidMapVideoMemory(TRUE);
|
|
|
|
pSpvgaInitializeFont();
|
|
|
|
//
|
|
// Shut the hardware cursor off.
|
|
//
|
|
RtlZeroMemory(&VideoCursorAttributes,sizeof(VideoCursorAttributes));
|
|
Status = ZwDeviceIoControlFile(
|
|
VideoVars.hDisplay,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_VIDEO_SET_CURSOR_ATTR,
|
|
&VideoCursorAttributes,
|
|
sizeof(VideoCursorAttributes),
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to turn hw cursor off (status = %lx)\n",Status));
|
|
}
|
|
|
|
VgaInitialized = TRUE;
|
|
|
|
ASSERT(VideoVars.VideoModeInfo.ScreenStride = 160);
|
|
ASSERT(VideoVars.VideoModeInfo.AttributeFlags & VIDEO_MODE_PALETTE_DRIVEN);
|
|
VideoVars.ScreenWidth = 80;
|
|
VideoVars.ScreenHeight = VideoVars.VideoModeInfo.VisScreenHeight / FontCharacterHeight;
|
|
|
|
//
|
|
// allocate the background video buffer, if needed
|
|
//
|
|
if (SP_IS_UPGRADE_GRAPHICS_MODE()) {
|
|
VideoVars.VideoBufferSize =
|
|
(VideoVars.VideoModeInfo.ScreenStride * VideoVars.VideoModeInfo.VisScreenHeight) / 8;
|
|
|
|
VideoVars.VideoBuffer = SpMemAlloc(VideoVars.VideoBufferSize);
|
|
|
|
if (!VideoVars.VideoBuffer) {
|
|
//
|
|
// Out of memory, run only in textmode
|
|
//
|
|
VideoVars.VideoBufferSize = 0;
|
|
SP_SET_UPGRADE_GRAPHICS_MODE(FALSE);
|
|
VideoVars.ActiveVideoBuffer = VideoVars.VideoMemoryInfo.FrameBufferBase;
|
|
} else {
|
|
VideoVars.ActiveVideoBuffer = VideoVars.VideoBuffer;
|
|
}
|
|
} else {
|
|
VideoVars.VideoBufferSize = 0;
|
|
VideoVars.VideoBuffer = NULL;
|
|
VideoVars.ActiveVideoBuffer = VideoVars.VideoMemoryInfo.FrameBufferBase;
|
|
}
|
|
}
|
|
|
|
BOOLEAN
|
|
VgaSpecificInitPalette(
|
|
VOID
|
|
)
|
|
{
|
|
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
|
|
USHORT InitialPalette[] = {
|
|
16, // 16 entries
|
|
0, // start with first palette register
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F};
|
|
|
|
if (!VgaInitialized) {
|
|
return(TRUE);
|
|
}
|
|
|
|
Status = ZwDeviceIoControlFile(
|
|
VideoVars.hDisplay,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_VIDEO_SET_PALETTE_REGISTERS,
|
|
InitialPalette,
|
|
sizeof(InitialPalette),
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to set palette (status = %lx)\n",Status));
|
|
return(FALSE);
|
|
}
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
VOID
|
|
VgaSpecificReInit(
|
|
VOID
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Arguments:
|
|
|
|
Return Value:
|
|
|
|
--*/
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
VIDEO_MODE VideoMode;
|
|
VIDEO_CURSOR_ATTRIBUTES VideoCursorAttributes;
|
|
|
|
if(!VgaInitialized) {
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Set the desired mode back
|
|
//
|
|
VideoMode.RequestedMode = VideoVars.VideoModeInfo.ModeIndex;
|
|
|
|
Status = ZwDeviceIoControlFile(
|
|
VideoVars.hDisplay,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_VIDEO_SET_CURRENT_MODE,
|
|
&VideoMode,
|
|
sizeof(VideoMode),
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to set mode %u (status = %lx)\n",VideoMode.RequestedMode,Status));
|
|
SpDisplayRawMessage(SP_SCRN_VIDEO_ERROR_RAW, 2, VIDEOBUG_SETMODE, Status);
|
|
while(TRUE); // loop forever
|
|
}
|
|
|
|
pSpvgaInitializeFont();
|
|
|
|
//
|
|
// Shut the hardware cursor off.
|
|
//
|
|
RtlZeroMemory(&VideoCursorAttributes,sizeof(VideoCursorAttributes));
|
|
|
|
Status = ZwDeviceIoControlFile(
|
|
VideoVars.hDisplay,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_VIDEO_SET_CURSOR_ATTR,
|
|
&VideoCursorAttributes,
|
|
sizeof(VideoCursorAttributes),
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to turn hw cursor off (status = %lx)\n",Status));
|
|
}
|
|
|
|
VgaSpecificInitPalette();
|
|
|
|
//
|
|
// Blast the cached video memory to the real framebuffer now
|
|
//
|
|
if (SP_IS_UPGRADE_GRAPHICS_MODE() && VideoVars.VideoBuffer &&
|
|
VideoVars.VideoBufferSize) {
|
|
PUCHAR Source = VideoVars.VideoBuffer;
|
|
PUCHAR Destination = VideoVars.VideoMemoryInfo.FrameBufferBase;
|
|
ULONG Index;
|
|
|
|
for (Index=0; Index < VideoVars.VideoBufferSize; Index++) {
|
|
WRITE_REGISTER_UCHAR(Destination + Index, *(Source + Index));
|
|
}
|
|
|
|
SP_SET_UPGRADE_GRAPHICS_MODE(FALSE);
|
|
VideoVars.ActiveVideoBuffer = VideoVars.VideoMemoryInfo.FrameBufferBase;
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
VgaSpecificTerminate(
|
|
VOID
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform text display specific termination. This includes
|
|
|
|
- unmapping video memory
|
|
|
|
Arguments:
|
|
|
|
None.
|
|
|
|
Return Value:
|
|
|
|
--*/
|
|
|
|
{
|
|
if(VgaInitialized) {
|
|
|
|
pSpvidMapVideoMemory(FALSE);
|
|
|
|
if (VideoVars.VideoBuffer && VideoVars.VideoBufferSize) {
|
|
SpMemFree(VideoVars.VideoBuffer);
|
|
VideoVars.VideoBuffer = NULL;
|
|
VideoVars.VideoBufferSize = 0;
|
|
}
|
|
|
|
VgaInitialized = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
VOID
|
|
VgaDisplayString(
|
|
IN PSTR String,
|
|
IN UCHAR Attribute,
|
|
IN ULONG X, // 0-based coordinates (character units)
|
|
IN ULONG Y
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Write a string of characters to the display.
|
|
|
|
Arguments:
|
|
|
|
Character - supplies a string (OEM charset) to be displayed
|
|
at the given position.
|
|
|
|
Attribute - supplies the attributes for the characters in the string.
|
|
|
|
X,Y - specify the character-based (0-based) position of the output.
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
PUCHAR Destination;
|
|
PUCHAR pch;
|
|
|
|
if (!VgaInitialized) {
|
|
return;
|
|
}
|
|
|
|
ASSERT(X < VideoVars.ScreenWidth);
|
|
ASSERT(Y < VideoVars.ScreenHeight);
|
|
|
|
Destination = (PUCHAR)VideoVars.ActiveVideoBuffer
|
|
+ (Y * VideoVars.VideoModeInfo.ScreenStride)
|
|
+ (2*X);
|
|
|
|
for(pch=String; *pch; pch++) {
|
|
|
|
WRITE_REGISTER_UCHAR(Destination ,*pch);
|
|
WRITE_REGISTER_UCHAR(Destination+1,Attribute);
|
|
|
|
Destination += 2;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
VOID
|
|
VgaClearRegion(
|
|
IN ULONG X,
|
|
IN ULONG Y,
|
|
IN ULONG W,
|
|
IN ULONG H,
|
|
IN UCHAR Attribute
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Clear out a screen region to a specific attribute.
|
|
|
|
Arguments:
|
|
|
|
X,Y,W,H - specify rectangle in 0-based character coordinates.
|
|
|
|
Attribute - Low nibble specifies attribute to be filled in the rectangle
|
|
(ie, the background color to be cleared to).
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
|
|
{
|
|
PUSHORT Destination;
|
|
USHORT Fill;
|
|
ULONG i,j;
|
|
|
|
if (!VgaInitialized) {
|
|
return;
|
|
}
|
|
|
|
Destination = (PUSHORT)((PUCHAR)VideoVars.ActiveVideoBuffer
|
|
+ (Y * VideoVars.VideoModeInfo.ScreenStride)
|
|
+ (2*X));
|
|
|
|
Fill = ((USHORT)VideoVars.AttributeToColorValue[Attribute] << 12) + ' ';
|
|
|
|
for(i=0; i<H; i++) {
|
|
|
|
for(j=0; j<W; j++) {
|
|
WRITE_REGISTER_USHORT(&Destination[j],Fill);
|
|
}
|
|
|
|
Destination += VideoVars.VideoModeInfo.ScreenStride / sizeof(USHORT);
|
|
}
|
|
}
|
|
|
|
|
|
BOOLEAN
|
|
VgaSpecificScrollUp(
|
|
IN ULONG TopLine,
|
|
IN ULONG BottomLine,
|
|
IN ULONG LineCount,
|
|
IN UCHAR FillAttribute
|
|
)
|
|
{
|
|
PUSHORT Source,Target;
|
|
ULONG Count;
|
|
|
|
if (!VgaInitialized) {
|
|
return(TRUE);
|
|
}
|
|
|
|
Target = (PUSHORT)VideoVars.ActiveVideoBuffer
|
|
+ ((TopLine * VideoVars.VideoModeInfo.ScreenStride)/2);
|
|
|
|
Source = Target + ((LineCount * VideoVars.VideoModeInfo.ScreenStride)/2);
|
|
|
|
Count = ((((BottomLine - TopLine) + 1) - LineCount) * VideoVars.VideoModeInfo.ScreenStride) / 2;
|
|
|
|
while (Count--) {
|
|
WRITE_REGISTER_USHORT(Target++, READ_REGISTER_USHORT(Source++));
|
|
}
|
|
|
|
|
|
//
|
|
// Clear bottom of scroll region
|
|
//
|
|
VgaClearRegion(0,
|
|
(BottomLine - LineCount) + 1,
|
|
VideoVars.ScreenWidth,
|
|
LineCount,
|
|
FillAttribute
|
|
);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
|
|
VOID
|
|
pSpvgaInitializeFont(
|
|
VOID
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Set up font support for the VGA. This assumes that the mode has been
|
|
set to the standard 720x400 VGA text mode. The current font (in .fnt
|
|
format) is transformed into a vga-loadable font and then loaded into
|
|
the VGA character generator.
|
|
|
|
Arguments:
|
|
|
|
None.
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
USHORT i;
|
|
PVIDEO_LOAD_FONT_INFORMATION DstFont;
|
|
NTSTATUS Status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
PUCHAR FontBuffer;
|
|
ULONG FontBufferSize;
|
|
|
|
FontBufferSize = (256*FontCharacterHeight) + sizeof(VIDEO_LOAD_FONT_INFORMATION);
|
|
FontBuffer = SpMemAlloc(FontBufferSize);
|
|
|
|
DstFont = (PVIDEO_LOAD_FONT_INFORMATION)FontBuffer;
|
|
|
|
DstFont->WidthInPixels = 9;
|
|
DstFont->HeightInPixels = (USHORT)FontCharacterHeight;
|
|
DstFont->FontSize = 256*FontCharacterHeight;
|
|
|
|
//
|
|
// Special case character 0 because it is not in vgaoem.fon, and we don't
|
|
// want to use the default character for it.
|
|
//
|
|
RtlZeroMemory(DstFont->Font,FontCharacterHeight);
|
|
|
|
//
|
|
// If i is not a USHORT, then (i<=255) is always TRUE!
|
|
//
|
|
for(i=1; i<=255; i++) {
|
|
|
|
UCHAR x;
|
|
|
|
if((i < FontHeader->FirstCharacter) || (i > FontHeader->LastCharacter)) {
|
|
x = FontHeader->DefaultCharacter;
|
|
} else {
|
|
x = (UCHAR)i;
|
|
}
|
|
|
|
x -= FontHeader->FirstCharacter;
|
|
|
|
RtlMoveMemory(
|
|
DstFont->Font + (i*FontCharacterHeight),
|
|
(PUCHAR)FontHeader + FontHeader->Map[x].Offset,
|
|
FontCharacterHeight
|
|
);
|
|
}
|
|
|
|
Status = ZwDeviceIoControlFile(
|
|
VideoVars.hDisplay,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
&IoStatusBlock,
|
|
IOCTL_VIDEO_LOAD_AND_SET_FONT,
|
|
FontBuffer,
|
|
FontBufferSize,
|
|
NULL,
|
|
0
|
|
);
|
|
|
|
SpMemFree(FontBuffer);
|
|
|
|
if(!NT_SUCCESS(Status)) {
|
|
KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to set vga font (%lx)\n",Status));
|
|
SpDisplayRawMessage(SP_SCRN_VIDEO_ERROR_RAW, 2, VIDEOBUG_SETFONT, Status);
|
|
while(TRUE); // loop forever
|
|
}
|
|
}
|
|
|