[tkreuzer] 44743: [i8042prt] - Fix Ctrl-Scroll key combination, by ignoring ACK codes and not relying on a 0xe0 sequence code, which is not being sent at least on VBox. - Fix Tab-K handling at high irql, by moving it out of the DPC routine into the ISR.

Author: tkreuzer
Date: Wed Dec 23 19:43:27 2009
New Revision: 44743

URL: http://svn.reactos.org/svn/reactos?rev=44743&view=rev
Log:
[i8042prt]
- Fix Ctrl-Scroll key combination, by ignoring ACK codes and not relying on a 0xe0 sequence code, which is not being sent at least on VBox.
- Fix Tab-K handling at high irql, by moving it out of the DPC routine into the ISR.

Modified:
    trunk/reactos/drivers/input/i8042prt/keyboard.c

Modified: trunk/reactos/drivers/input/i8042prt/keyboard.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/input/i8042prt/keyb...
==============================================================================
--- trunk/reactos/drivers/input/i8042prt/keyboard.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/input/i8042prt/keyboard.c [iso-8859-1] Wed Dec 23 19:43:27 2009
@@ -15,7 +15,6 @@

/* GLOBALS *******************************************************************/

-static IO_WORKITEM_ROUTINE i8042DebugWorkItem;
 static IO_WORKITEM_ROUTINE i8042PowerWorkItem;

/* This structure starts with the same layout as KEYBOARD_INDICATOR_TRANSLATION */
@@ -30,23 +29,6 @@
    {0x46, KEYBOARD_SCROLL_LOCK_ON}}};

/* FUNCTIONS *****************************************************************/
-
-static VOID NTAPI
-i8042DebugWorkItem(
-	IN PDEVICE_OBJECT DeviceObject,
-	IN PVOID Key)
-{
-	UNREFERENCED_PARAMETER(DeviceObject);
-	INFO_(I8042PRT, "Debug key: p\n", Key);
-
-	if (!Key)
-		return;
-
-	/* We hope kernel would understand this. If
-	 * that's not the case, nothing would happen.
-	 */
-	KdSystemDebugControl(' soR', Key, 0, NULL, 0, NULL, KernelMode);
-}

/*
  * These functions are callbacks for filter driver custom interrupt
@@ -366,26 +348,6 @@
    KeysInBufferCopy = DeviceExtension->KeysInBuffer;

KeReleaseInterruptSpinLock(PortDeviceExtension->HighestDIRQLInterrupt, Irql);
-
-	if (PortDeviceExtension->Settings.CrashOnCtrlScroll)
-	{
-		PKEYBOARD_INPUT_DATA InputData;
-		InputData = DeviceExtension->KeyboardBuffer + KeysInBufferCopy - 1;
-
-		/* Test for TAB + key combination */
-		if (InputData->MakeCode == 0x0F)
-			DeviceExtension->TabPressed = !(InputData->Flags & KEY_BREAK);
-		else if (DeviceExtension->TabPressed)
-		{
-			DeviceExtension->TabPressed = FALSE;
-
-			IoQueueWorkItem(
-				DeviceExtension->DebugWorkItem,
-				&i8042DebugWorkItem,
-				DelayedWorkQueue,
-				(PVOID)(ULONG_PTR)InputData->MakeCode);
-		}
-	}

TRACE_(I8042PRT, "Send a key\n");

@@ -827,18 +789,40 @@
    if (PortDeviceExtension->Settings.CrashOnCtrlScroll)
    {
    	/* Test for CTRL + SCROLL LOCK twice */
-		static const UCHAR ScanCodes[] = { 0xe0, 0x1d, 0x46, 0xc6, 0x46, 0 };
+		static const UCHAR ScanCodes[] = { 0x1d, 0x46, 0xc6, 0x46, 0 };

if (Output == ScanCodes[DeviceExtension->ComboPosition])
    	{
    		DeviceExtension->ComboPosition++;
    		if (ScanCodes[DeviceExtension->ComboPosition] == 0)
    			KeBugCheck(MANUALLY_INITIATED_CRASH);
+		}
+		else if (Output == 0xfa)
+		{
+		    /* Ignore ACK */
    	}
    	else if (Output == ScanCodes[0])
    		DeviceExtension->ComboPosition = 1;
    	else
    		DeviceExtension->ComboPosition = 0;
+
+		/* Test for TAB + key combination */
+		if (InputData->MakeCode == 0x0F)
+			DeviceExtension->TabPressed = !(InputData->Flags & KEY_BREAK);
+		else if (DeviceExtension->TabPressed)
+		{
+			DeviceExtension->TabPressed = FALSE;
+
+			/* Send request to the kernel debugger. 
+			 * Unknown requests will be ignored. */
+			KdSystemDebugControl(' soR',
+			                     (PVOID)(ULONG_PTR)InputData->MakeCode,
+			                     0,
+			                     NULL,
+			                     0,
+			                     NULL,
+			                     KernelMode);
+		}
    }

if (i8042KbdCallIsrHook(DeviceExtension, PortStatus, Output, &ToReturn))