[ion] 23654: - Add the code necessary in the C version of KeLowerIRql to properly mask the PIC, and enable #ifed code in ASM KeRaiseIrql to mask the PIC, since it now works.

Author: ion
Date: Wed Aug 23 02:45:45 2006
New Revision: 23654

URL: http://svn.reactos.org/svn/reactos?rev=23654&view=rev
Log:
- Add the code necessary in the C version of KeLowerIRql to properly mask the PIC, and
enable #ifed code in ASM KeRaiseIrql to mask the PIC, since it now works.

Modified:
    trunk/reactos/hal/halx86/generic/irq.S
    trunk/reactos/hal/halx86/generic/irql.c

Modified: trunk/reactos/hal/halx86/generic/irq.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/irq.S?r…
==============================================================================
--- trunk/reactos/hal/halx86/generic/irq.S (original)
+++ trunk/reactos/hal/halx86/generic/irq.S Wed Aug 23 02:45:45 2006
@@ -464,14 +464,12 @@
     /* Set the new IRQL */
     mov [fs:KPCR_IRQL], cl
 
-#if 0
     /* Mask the interrupts in the PIC */
     mov eax, _KiI8259MaskTable[ecx*4]
     or eax, [fs:KPCR_IDR]
     out 0x21, al
     shr eax, 8
     out 0xA1, al
-#endif
 
     /* Restore interrupts and return old IRQL */
     popf

Modified: trunk/reactos/hal/halx86/generic/irql.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/irql.c?…
==============================================================================
--- trunk/reactos/hal/halx86/generic/irql.c (original)
+++ trunk/reactos/hal/halx86/generic/irql.c Wed Aug 23 02:45:45 2006
@@ -51,6 +51,15 @@
 VOID STATIC
 HalpLowerIrql(KIRQL NewIrql)
 {
+    ULONG Mask;
+
+    if (KeGetPcr()->Irql > DISPATCH_LEVEL)
+    {
+        Mask = KeGetPcr()->IDR | KiI8259MaskTable[NewIrql];
+        WRITE_PORT_UCHAR((PUCHAR)0x21,  (UCHAR)Mask);
+        Mask >>= 8;
+        WRITE_PORT_UCHAR((PUCHAR)0xa1, (UCHAR)Mask);
+    }
   if (NewIrql >= PROFILE_LEVEL)
     {
       KeGetPcr()->Irql = NewIrql;
@@ -112,6 +121,7 @@
   HalpLowerIrql(NewIrql);
 }
 
+
 VOID STDCALL HalEndSystemInterrupt (KIRQL Irql, ULONG Unknown2)
 /*
  * FUNCTION: Finish a system interrupt and restore the specified irq level.