#include <umtypes.h>
#include <inbvtypes.h>
#include <section_attribs.h>

Include dependency graph for inbvfuncs.h:

This graph shows which files directly or indirectly include this file:

Functions
VOID NTAPI	InbvAcquireDisplayOwnership (VOID)

BOOLEAN NTAPI	InbvCheckDisplayOwnership (VOID)

VOID NTAPI	InbvNotifyDisplayOwnershipLost (_In_ INBV_RESET_DISPLAY_PARAMETERS Callback)

VOID NTAPI	InbvEnableBootDriver (_In_ BOOLEAN Enable)

VOID NTAPI	InbvInstallDisplayStringFilter (_In_ INBV_DISPLAY_STRING_FILTER DisplayFilter)

BOOLEAN NTAPI	InbvIsBootDriverInstalled (VOID)

BOOLEAN NTAPI	InbvDisplayString (_In_ PCHAR String)

BOOLEAN NTAPI	InbvEnableDisplayString (_In_ BOOLEAN Enable)

BOOLEAN NTAPI	InbvResetDisplay (VOID)

VOID NTAPI	InbvSetScrollRegion (_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom)

VOID NTAPI	InbvSetTextColor (_In_ ULONG Color)

VOID NTAPI	InbvSolidColorFill (_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom, _In_ ULONG Color)

Function Documentation

◆ InbvAcquireDisplayOwnership()

VOID NTAPI InbvAcquireDisplayOwnership ( VOID )

Definition at line 289 of file inbv.c.

{
    /* Check if we have a callback and we're just acquiring it now */
    if ((InbvResetDisplayParameters) &&
        (InbvDisplayState == INBV_DISPLAY_STATE_LOST))
    {
        /* Call the callback */
        InbvResetDisplayParameters(80, 50);
    }
 
    /* Acquire the display */
    InbvDisplayState = INBV_DISPLAY_STATE_OWNED;
}

Referenced by HalHandleNMI(), HalReturnToFirmware(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

◆ InbvCheckDisplayOwnership()

BOOLEAN NTAPI InbvCheckDisplayOwnership ( VOID )

Definition at line 315 of file inbv.c.

{
    /* Return if we own it or not */
    return InbvDisplayState != INBV_DISPLAY_STATE_LOST;
}

Referenced by InbvMonitorThread(), KdpScreenRelease(), and PopShutdownHandler().

◆ InbvDisplayString()

BOOLEAN NTAPI InbvDisplayString ( _In_ PCHAR String )

Definition at line 331 of file inbv.c.

{
    /* Make sure we own the display */
    if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED)
    {
        /* If we're not allowed, return success anyway */
        if (!InbvDisplayDebugStrings) return TRUE;
 
        /* Check if a filter is installed */
        if (InbvDisplayFilter) InbvDisplayFilter(&String);
 
        /* Acquire the lock */
        InbvAcquireLock();
 
        /* Make sure we're installed and display the string */
        if (InbvBootDriverInstalled) VidDisplayString((PUCHAR)String);
 
        /* Print the string on the EMS port */
        HeadlessDispatch(HeadlessCmdPutString,
                         String,
                         strlen(String) + sizeof(ANSI_NULL),
                         NULL,
                         NULL);
 
        /* Release the lock */
        InbvReleaseLock();
 
        /* All done */
        return TRUE;
    }
 
    /* We don't own it, fail */
    return FALSE;
}

Referenced by HalDisplayString(), HalHandleNMI(), KeBugCheckWithTf(), KeGetBugMessageText(), KiDisplayBlueScreen(), KiDumpParameterImages(), NtDisplayString(), Phase1InitializationDiscard(), and PopShutdownHandler().

◆ InbvEnableBootDriver()

VOID NTAPI InbvEnableBootDriver ( _In_ BOOLEAN Enable )

Definition at line 257 of file inbv.c.

{
    /* Check if we're installed */
    if (InbvBootDriverInstalled)
    {
        /* Check for lost state */
        if (InbvDisplayState >= INBV_DISPLAY_STATE_LOST) return;
 
        /* Acquire the lock */
        InbvAcquireLock();
 
        /* Cleanup the screen if we own it */
        if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED) VidCleanUp();
 
        /* Set the new display state */
        InbvDisplayState = Enable ? INBV_DISPLAY_STATE_OWNED :
                                    INBV_DISPLAY_STATE_DISABLED;
 
        /* Release the lock */
        InbvReleaseLock();
    }
    else
    {
        /* Set the new display state */
        InbvDisplayState = Enable ? INBV_DISPLAY_STATE_OWNED :
                                    INBV_DISPLAY_STATE_DISABLED;
    }
}

Referenced by Phase1InitializationDiscard().

◆ InbvEnableDisplayString()

BOOLEAN NTAPI InbvEnableDisplayString ( _In_ BOOLEAN Enable )

Definition at line 369 of file inbv.c.

{
    BOOLEAN OldSetting;
 
    /* Get the old setting */
    OldSetting = InbvDisplayDebugStrings;
 
    /* Update it */
    InbvDisplayDebugStrings = Enable;
 
    /* Return the old setting */
    return OldSetting;
}

Referenced by HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), Phase1InitializationDiscard(), and PopShutdownHandler().

◆ InbvInstallDisplayStringFilter()

VOID NTAPI InbvInstallDisplayStringFilter ( _In_ INBV_DISPLAY_STRING_FILTER DisplayFilter )

Definition at line 386 of file inbv.c.

{
    /* Save the filter */
    InbvDisplayFilter = DisplayFilter;
}

Referenced by DisplayBootBitmap(), DisplayFilter(), HalHandleNMI(), KdpScreenAcquire(), and KiDisplayBlueScreen().

◆ InbvIsBootDriverInstalled()

BOOLEAN NTAPI InbvIsBootDriverInstalled ( VOID )

Definition at line 395 of file inbv.c.

{
    /* Return driver state */
    return InbvBootDriverInstalled;
}

Referenced by HalHandleNMI(), KdpScreenAcquire(), KdpScreenRelease(), KiDisplayBlueScreen(), and PopShutdownHandler().

◆ InbvNotifyDisplayOwnershipLost()

VOID NTAPI InbvNotifyDisplayOwnershipLost ( _In_ INBV_RESET_DISPLAY_PARAMETERS Callback )

Definition at line 403 of file inbv.c.

{
    /* Check if we're installed */
    if (InbvBootDriverInstalled)
    {
        /* Acquire the lock and cleanup if we own the screen */
        InbvAcquireLock();
        if (InbvDisplayState != INBV_DISPLAY_STATE_LOST) VidCleanUp();
 
        /* Set the reset callback and display state */
        InbvResetDisplayParameters = Callback;
        InbvDisplayState = INBV_DISPLAY_STATE_LOST;
 
        /* Release the lock */
        InbvReleaseLock();
    }
    else
    {
        /* Set the reset callback and display state */
        InbvResetDisplayParameters = Callback;
        InbvDisplayState = INBV_DISPLAY_STATE_LOST;
    }
}

Referenced by InbvMonitorThread(), IntVideoPortInbvCleanup(), IntVideoPortInbvInitialize(), KdpScreenRelease(), Phase1InitializationDiscard(), ScrInbvCleanup(), and ScrInbvInitialize().

◆ InbvResetDisplay()

BOOLEAN NTAPI InbvResetDisplay ( VOID )

Definition at line 430 of file inbv.c.

{
    /* Check if we're installed and we own it */
    if (InbvBootDriverInstalled &&
        (InbvDisplayState == INBV_DISPLAY_STATE_OWNED))
    {
        /* Do the reset */
        VidResetDisplay(TRUE);
        return TRUE;
    }
 
    /* Nothing to reset */
    return FALSE;
}

Referenced by HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

◆ InbvSetScrollRegion()

VOID NTAPI InbvSetScrollRegion	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ ULONG	Right,
		_In_ ULONG	Bottom
	)

Definition at line 447 of file inbv.c.

{
    /* Just call bootvid */
    VidSetScrollRegion(Left, Top, Right, Bottom);
}

Referenced by DisplayBootBitmap(), HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

◆ InbvSetTextColor()

VOID NTAPI InbvSetTextColor ( _In_ ULONG Color )

Definition at line 459 of file inbv.c.

{
    HEADLESS_CMD_SET_COLOR HeadlessSetColor;
 
    /* Set color for EMS port */
#ifdef INBV_HEADLESS_COLORS
    InbvTerminalTextColor = 30 + CGA_TO_ANSI_COLOR(Color);
#else
    InbvTerminalTextColor = 37;
#endif
    HeadlessSetColor.TextColor = InbvTerminalTextColor;
    HeadlessSetColor.BkgdColor = InbvTerminalBkgdColor;
    HeadlessDispatch(HeadlessCmdSetColor,
                     &HeadlessSetColor,
                     sizeof(HeadlessSetColor),
                     NULL,
                     NULL);
 
    /* Update the text color */
    VidSetTextColor(Color);
}

Referenced by DisplayBootBitmap(), HalHandleNMI(), KdpScreenAcquire(), and KiDisplayBlueScreen().

◆ InbvSolidColorFill()

VOID NTAPI InbvSolidColorFill	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ ULONG	Right,
		_In_ ULONG	Bottom,
		_In_ ULONG	Color
	)

Definition at line 484 of file inbv.c.

{
    HEADLESS_CMD_SET_COLOR HeadlessSetColor;
 
    /* Make sure we own it */
    if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED)
    {
        /* Acquire the lock */
        InbvAcquireLock();
 
        /* Check if we're installed */
        if (InbvBootDriverInstalled)
        {
            /* Call bootvid */
            VidSolidColorFill(Left, Top, Right, Bottom, (UCHAR)Color);
        }
 
        /* Set color for EMS port and clear display */
#ifdef INBV_HEADLESS_COLORS
        InbvTerminalBkgdColor = 40 + CGA_TO_ANSI_COLOR(Color);
#else
        InbvTerminalBkgdColor = 40;
#endif
        HeadlessSetColor.TextColor = InbvTerminalTextColor;
        HeadlessSetColor.BkgdColor = InbvTerminalBkgdColor;
        HeadlessDispatch(HeadlessCmdSetColor,
                         &HeadlessSetColor,
                         sizeof(HeadlessSetColor),
                         NULL,
                         NULL);
        HeadlessDispatch(HeadlessCmdClearDisplay,
                         NULL, 0,
                         NULL, NULL);
 
        /* Release the lock */
        InbvReleaseLock();
    }
}