display.c File Reference

#include <hal.h>
#include <ppcboot.h>
#include <ppcdebug.h>
#include <debug.h>

Include dependency graph for display.c:

Go to the source code of this file.

Macros
#define	NDEBUG
#define	SCREEN_SYNCHRONIZATION

Functions
void	SetPhys (ULONG Addr, ULONG Data)
ULONG	GetPhys (ULONG Addr)
void	SetPhysByte (ULONG Addr, ULONG Data)
VOID FASTCALL	HalClearDisplay (UCHAR CharAttribute)
VOID STATIC	HalScrollDisplay (VOID)
VOID STATIC FASTCALL	HalPutCharacter (CHAR Character)
VOID FASTCALL	HalInitializeDisplay (PROS_LOADER_PARAMETER_BLOCK LoaderBlock)
VOID NTAPI	HalReleaseDisplayOwnership (VOID)
VOID NTAPI	HalAcquireDisplayOwnership (IN PHAL_RESET_DISPLAY_PARAMETERS ResetDisplayParameters)
VOID NTAPI	HalDisplayString (IN PCH String)
VOID NTAPI	HalQueryDisplayParameters (OUT PULONG DispSizeX, OUT PULONG DispSizeY, OUT PULONG CursorPosX, OUT PULONG CursorPosY)
VOID NTAPI	HalSetDisplayParameters (IN ULONG CursorPosX, IN ULONG CursorPosY)
BOOLEAN NTAPI	HalQueryDisplayOwnership (VOID)

Variables
boot_infos_t	PpcEarlybootInfo
static ULONG	CursorX = 0
static ULONG	CursorY = 0
static ULONG	SizeX = 80
static ULONG	SizeY = 25
static BOOLEAN	DisplayInitialized = FALSE
static BOOLEAN	HalOwnsDisplay = TRUE
static ULONG	GraphVideoBuffer = 0
static PHAL_RESET_DISPLAY_PARAMETERS	HalResetDisplayParameters = NULL
UCHAR	XboxFont8x16 []

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 127 of file display.c.

SCREEN_SYNCHRONIZATION

#define SCREEN_SYNCHRONIZATION

Definition at line 132 of file display.c.

Function Documentation

GetPhys()

ULONG GetPhys

(

ULONG

Addr

)

Referenced by _mmumain(), CopyFrame(), HalScrollDisplay(), InsertPageEntry(), PpcPrepGetMemoryMap(), and PpcVirt2phys().

HalAcquireDisplayOwnership()

VOID NTAPI HalAcquireDisplayOwnership

(

IN PHAL_RESET_DISPLAY_PARAMETERS

ResetDisplayParameters

)

Definition at line 269 of file display.c.

{
  HalOwnsDisplay = FALSE;
  HalResetDisplayParameters = ResetDisplayParameters;
}

HalClearDisplay()

VOID FASTCALL HalClearDisplay

(

UCHAR

CharAttribute

)

Definition at line 154 of file display.c.

{
   ULONG i;
   ULONG deviceSize =
       PpcEarlybootInfo.dispDeviceRowBytes *
       PpcEarlybootInfo.dispDeviceRect[3];
   for(i = 0; i < deviceSize; i += sizeof(int) )
       SetPhys(GraphVideoBuffer + i, CharAttribute);

   CursorX = 0;
   CursorY = 0;
}

Referenced by HalInitializeDisplay(), and HalReleaseDisplayOwnership().

HalDisplayString()

VOID NTAPI HalDisplayString

(

IN PCH

String

)

Definition at line 282 of file display.c.

{
  PCH pch;
  //static KSPIN_LOCK Lock;
  KIRQL OldIrql;
  BOOLEAN InterruptsEnabled = __readmsr();

  /* See comment at top of file */
  if (! HalOwnsDisplay || ! DisplayInitialized)
    {
      return;
    }

  pch = String;

  KeRaiseIrql(HIGH_LEVEL, &OldIrql);
  //KiAcquireSpinLock(&Lock);

  _disable();

  while (*pch != 0)
    {
      if (*pch == '\n')
    {
      CursorY++;
      CursorX = 0;
    }
      else if (*pch == '\b')
    {
      if (CursorX > 0)
        {
          CursorX--;
        }
    }
      else if (*pch != '\r')
    {
      HalPutCharacter (*pch);
      CursorX++;

      if (CursorX >= SizeX)
        {
          CursorY++;
          CursorX = 0;
        }
    }

      if (CursorY >= SizeY)
    {
      HalScrollDisplay ();
      CursorY = SizeY - 1;
    }

      pch++;
    }

  __writemsr(InterruptsEnabled);

  //KiReleaseSpinLock(&Lock);
  KeLowerIrql(OldIrql);
}

HalInitializeDisplay()

VOID FASTCALL HalInitializeDisplay

(

PROS_LOADER_PARAMETER_BLOCK

LoaderBlock

)

Definition at line 222 of file display.c.

{
    if (! DisplayInitialized)
    {
      boot_infos_t *XBootInfo = (boot_infos_t *)LoaderBlock->ArchExtra;
      GraphVideoBuffer = (ULONG)XBootInfo->dispDeviceBase;
      memcpy(&PpcEarlybootInfo, XBootInfo, sizeof(*XBootInfo));

      /* Set cursor position */
      CursorX = 0;
      CursorY = 0;

      SizeX = XBootInfo->dispDeviceRowBytes / XBootInfo->dispDeviceDepth;
      SizeY = XBootInfo->dispDeviceRect[3] / 16;

      HalClearDisplay(1);

      DisplayInitialized = TRUE;
    }
}

HalPutCharacter()

VOID STATIC FASTCALL HalPutCharacter

(

CHAR

Character

)

Definition at line 195 of file display.c.

{
    WRITE_PORT_UCHAR((PVOID)0x3f8, Character);
#if 0
    int i,j,k;
    ULONG Dest =
    (GraphVideoBuffer +
     (16 * PpcEarlybootInfo.dispDeviceRowBytes * CursorY) +
     (8 * (PpcEarlybootInfo.dispDeviceDepth / 8) * CursorX)), RowDest;
    UCHAR ByteToPlace;

    for( i = 0; i < 16; i++ ) {
    RowDest = Dest;
    for( j = 0; j < 8; j++ ) {
        ByteToPlace = ((128 >> j) & (XboxFont8x16[(16 * Character) + i])) ? 0xff : 1;
        for( k = 0; k < PpcEarlybootInfo.dispDeviceDepth / 8; k++, RowDest++ ) {
        SetPhysByte(RowDest, ByteToPlace);
        }
    }
    Dest += PpcEarlybootInfo.dispDeviceRowBytes;
    }
#endif
}

Referenced by HalDisplayString().

HalQueryDisplayOwnership()

BOOLEAN NTAPI HalQueryDisplayOwnership

(

VOID

)

Definition at line 378 of file display.c.

{
  return !HalOwnsDisplay;
}

HalQueryDisplayParameters()

VOID NTAPI HalQueryDisplayParameters	(	OUT PULONG	DispSizeX,
		OUT PULONG	DispSizeY,
		OUT PULONG	CursorPosX,
		OUT PULONG	CursorPosY
	)

Definition at line 352 of file display.c.

{
  if (DispSizeX)
    *DispSizeX = SizeX;
  if (DispSizeY)
    *DispSizeY = SizeY;
  if (CursorPosX)
    *CursorPosX = CursorX;
  if (CursorPosY)
    *CursorPosY = CursorY;
}

HalReleaseDisplayOwnership()

VOID NTAPI HalReleaseDisplayOwnership

(

VOID

)

Definition at line 252 of file display.c.

{
  if (HalResetDisplayParameters == NULL)
    return;

  if (HalOwnsDisplay != FALSE)
    return;

  HalOwnsDisplay = TRUE;
  HalClearDisplay(0);
}

HalScrollDisplay()

VOID STATIC HalScrollDisplay

(

VOID

)

Definition at line 171 of file display.c.

{
    ULONG i, deviceSize =
    PpcEarlybootInfo.dispDeviceRowBytes *
    PpcEarlybootInfo.dispDeviceRect[3];
    ULONG Dest = (ULONG)GraphVideoBuffer,
    Src = (ULONG)(GraphVideoBuffer + (16 * PpcEarlybootInfo.dispDeviceRowBytes));
    ULONG End  = (ULONG)
    GraphVideoBuffer +
    (PpcEarlybootInfo.dispDeviceRowBytes *
     (PpcEarlybootInfo.dispDeviceRect[3]-16));

    while( Src < End )
    {
    SetPhys((ULONG)Dest, GetPhys(Src));
    Src += 4; Dest += 4;
    }

    /* Clear the bottom row */
    for(i = End; i < deviceSize; i += sizeof(int) )
    SetPhys(GraphVideoBuffer + i, 1);
}

Referenced by HalDisplayString().

HalSetDisplayParameters()

VOID NTAPI HalSetDisplayParameters	(	IN ULONG	CursorPosX,
		IN ULONG	CursorPosY
	)

Definition at line 369 of file display.c.

{
  CursorX = (CursorPosX < SizeX) ? CursorPosX : SizeX - 1;
  CursorY = (CursorPosY < SizeY) ? CursorPosY : SizeY - 1;
}

SetPhys()

void SetPhys	(	ULONG	Addr,
		ULONG	Data
	)

Referenced by _MmuInit(), copy_trap_handler(), HalClearDisplay(), HalScrollDisplay(), InsertPageEntry(), KiSetupDecrementerTrap(), KiSetupSyscallHandler(), PPCMMU(), and PpcPrepGetMemoryMap().

SetPhysByte()

void SetPhysByte	(	ULONG	Addr,
		ULONG	Data
	)

Referenced by HalPutCharacter(), ide_read(), ide_setup(), IntEnable(), outchar(), PpcPrepPutChar(), send(), setup(), and WRITE_PORT_UCHAR().

Variable Documentation

CursorX

ULONG CursorX = 0

static

Definition at line 136 of file display.c.

Referenced by GuiPaintTextModeBuffer(), HalClearDisplay(), HalDisplayString(), HalInitializeDisplay(), HalPutCharacter(), HalQueryDisplayParameters(), HalSetDisplayParameters(), and ScreenWrite().

CursorY

ULONG CursorY = 0

static

Definition at line 137 of file display.c.

Referenced by GuiPaintTextModeBuffer(), HalClearDisplay(), HalDisplayString(), HalInitializeDisplay(), HalPutCharacter(), HalQueryDisplayParameters(), HalSetDisplayParameters(), and ScreenWrite().

DisplayInitialized

BOOLEAN DisplayInitialized = FALSE

static

Definition at line 141 of file display.c.

Referenced by HalDisplayString(), and HalInitializeDisplay().

GraphVideoBuffer

ULONG GraphVideoBuffer = 0

static

Definition at line 143 of file display.c.

Referenced by HalClearDisplay(), HalInitializeDisplay(), HalPutCharacter(), and HalScrollDisplay().

HalOwnsDisplay

BOOLEAN HalOwnsDisplay = TRUE

static

Definition at line 142 of file display.c.

Referenced by HalAcquireDisplayOwnership(), HalDisplayString(), HalQueryDisplayOwnership(), and HalReleaseDisplayOwnership().

HalResetDisplayParameters

PHAL_RESET_DISPLAY_PARAMETERS HalResetDisplayParameters = NULL

static

Definition at line 144 of file display.c.

Referenced by HalAcquireDisplayOwnership(), and HalReleaseDisplayOwnership().

PpcEarlybootInfo

boot_infos_t PpcEarlybootInfo

Definition at line 130 of file display.c.

Referenced by HalClearDisplay(), HalInitializeDisplay(), HalPutCharacter(), and HalScrollDisplay().

SizeX

ULONG SizeX = 80

static

Definition at line 138 of file display.c.

Referenced by ConDrvReadConsoleOutput(), ConDrvWriteConsoleOutput(), HalDisplayString(), HalInitializeDisplay(), HalQueryDisplayParameters(), HalSetDisplayParameters(), IntReadConsoleOutput(), IntWriteConsoleOutput(), VGADDI_BltPointerToVGA(), VGADDI_ComputePointerRect(), and VGADDI_ShowCursor().

SizeY

ULONG SizeY = 25

static

Definition at line 139 of file display.c.

Referenced by ConDrvReadConsoleOutput(), ConDrvWriteConsoleOutput(), HalDisplayString(), HalInitializeDisplay(), HalQueryDisplayParameters(), HalSetDisplayParameters(), IntReadConsoleOutput(), IntWriteConsoleOutput(), VGADDI_BltFromSavedScreenBits(), VGADDI_BltPointerToVGA(), VGADDI_BltToSavedScreenBits(), VGADDI_ComputePointerRect(), and VGADDI_ShowCursor().

XboxFont8x16

UCHAR XboxFont8x16[]

Definition at line 23 of file xboxfont.c.

Referenced by HalPutCharacter(), and XboxVideoOutputChar().