#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();
     }
 }