Implemented hal system interrupt functions

svn path=/trunk/; revision=1275

reactos/include/ddk/halddk.h

@@ -1,4 +1,4 @@
-/* $Id: halddk.h,v 1.4 2000/07/04 11:11:03 dwelch Exp $
+/* $Id: halddk.h,v 1.5 2000/07/24 23:48:24 ekohl Exp $
  *
  * COPYRIGHT:                See COPYING in the top level directory
  * PROJECT:                  ReactOS kernel
@@ -344,9 +344,9 @@ HalAssignSlotResources (
 	PCM_RESOURCE_LIST	*AllocatedResources
 	);
 
-/*
-HalBeginSystemInterrupt
-*/
+BOOLEAN STDCALL HalBeginSystemInterrupt (ULONG Vector,
+					 KIRQL Irql,
+					 PKIRQL OldIrql);
 
 /*
 HalCalibratePerformanceCounter
@@ -357,9 +357,8 @@ FASTCALL
 HalClearSoftwareInterrupt
 */
 
-/*
-HalDisableSystemInterrupt
-*/
+BOOLEAN STDCALL HalDisableSystemInterrupt (ULONG Vector,
+					   ULONG Unknown2);
 
 VOID
 STDCALL
@@ -367,13 +366,13 @@ HalDisplayString (
 	IN	PCH	String
 	);
 
-/*
-HalEnableSystemInterrupt
-*/
+BOOLEAN STDCALL HalEnableSystemInterrupt (ULONG Vector,
+					  ULONG Unknown2,
+					  ULONG Unknown3);
+
+VOID STDCALL HalEndSystemInterrupt (KIRQL Irql,
+				    ULONG Unknown2);
 
-/*
-HalEndSystemInterrupt
-*/
 
 /* Is this function really exported ?? */
 VOID

reactos/include/ddk/kefuncs.h

@@ -66,6 +66,15 @@ VOID STDCALL KeDisconnectInterrupt(PKINTERRUPT InterruptObject);
 
 VOID STDCALL KeEnterCriticalRegion (VOID);
 
+/*
+ * FUNCTION: Enters the kernel debugger
+ * ARGUMENTS:
+ *	None
+ */
+VOID STDCALL KeEnterKernelDebugger (VOID);
+
+VOID STDCALL KeFlushWriteBuffer (VOID);
+
 KIRQL STDCALL KeGetCurrentIrql (VOID);
 
 ULONG KeGetCurrentProcessorNumber(VOID);
@@ -355,15 +364,6 @@ KeWaitForSingleObject (
 	);
 
 
-/*
- * FUNCTION: Sets the current irql without altering the current processor 
- * state
- * ARGUMENTS:
- *          newlvl = IRQ level to set
- * NOTE: This is for internal use only
- */
-VOID KeSetCurrentIrql(KIRQL newlvl);
-
 
 // io permission map has a 8k size
 // Each bit in the IOPM corresponds to an io port byte address. The bitmap
@@ -426,21 +426,6 @@ NTSTATUS KeI386ReleaseGdtSelectors(OUT PULONG SelArray,
 NTSTATUS KeI386AllocateGdtSelectors(OUT PULONG SelArray,
 				    IN ULONG NumOfSelectors);
 
-/*
- * FUNCTION: Enters the kernel debugger
- * ARGUMENTS:
- *	None
- */
-VOID
-STDCALL
-KeEnterKernelDebugger (VOID);
-
-
-VOID
-STDCALL
-KeFlushWriteBuffer (
-	VOID
-	);
 
 KIRQL
 FASTCALL

reactos/ntoskrnl/hal/x86/halinit.c

@@ -1,4 +1,4 @@
-/* $Id: halinit.c,v 1.13 2000/07/10 21:49:29 ekohl Exp $
+/* $Id: halinit.c,v 1.14 2000/07/24 23:50:13 ekohl Exp $
  *
  * COPYRIGHT:     See COPYING in the top level directory
  * PROJECT:       ReactOS kernel
@@ -14,6 +14,7 @@
 #include <ddk/ntddk.h>
 #include <internal/hal.h>
 #include <internal/ntoskrnl.h>
+#include <internal/halio.h>
 
 #define NDEBUG
 #include <internal/debug.h>
@@ -31,6 +32,7 @@ HalInitSystem (
    {
       HalInitializeDisplay (LoaderBlock);
       HalpCalibrateStallExecution ();
+      HalpInitPICs ();
    }
    else
    {

reactos/ntoskrnl/hal/x86/irql.c

@@ -19,6 +19,10 @@
 
 /* GLOBALS ******************************************************************/
 
+/* FIXME: this should be in a header file */
+#define NR_IRQS         (16)
+#define IRQ_BASE        (0x40)
+
 /*
  * PURPOSE: Current irq level
  */
@@ -26,8 +30,17 @@ static KIRQL CurrentIrql = HIGH_LEVEL;
 
 extern ULONG DpcQueueSize;
 
+static VOID KeSetCurrentIrql(KIRQL newlvl);
+
 /* FUNCTIONS ****************************************************************/
 
+VOID HalpInitPICs(VOID)
+{
+   /* Mask off all interrupts from PICs */
+   outb(0x21,0xff);
+   outb(0xa1,0xff);
+}
+
 #if 0
 static unsigned int HiGetCurrentPICMask(void)
 {
@@ -118,16 +131,6 @@ static VOID HiSwitchIrql(KIRQL oldIrql)
 }
 
 
-VOID KeSetCurrentIrql(KIRQL newlvl)
-/*
- * PURPOSE: Sets the current irq level without taking any action
- */
-{
-//   DPRINT("KeSetCurrentIrql(newlvl %x)\n",newlvl);
-   CurrentIrql = newlvl;
-}
-
-
 KIRQL STDCALL KeGetCurrentIrql (VOID)
 /*
  * PURPOSE: Returns the current irq level
@@ -138,6 +141,16 @@ KIRQL STDCALL KeGetCurrentIrql (VOID)
 }
 
 
+static VOID KeSetCurrentIrql(KIRQL newlvl)
+/*
+ * PURPOSE: Sets the current irq level without taking any action
+ */
+{
+//   DPRINT("KeSetCurrentIrql(newlvl %x)\n",newlvl);
+   CurrentIrql = newlvl;
+}
+
+
 /**********************************************************************
  * NAME							EXPORTED
  *	KfLowerIrql
@@ -282,4 +295,81 @@ KeRaiseIrql (
 	*OldIrql = KfRaiseIrql (NewIrql);
 }
 
+
+BOOLEAN STDCALL HalBeginSystemInterrupt (ULONG Vector,
+					 KIRQL Irql,
+					 PKIRQL OldIrql)
+{
+   if (Vector < IRQ_BASE || Vector > IRQ_BASE + NR_IRQS)
+	return FALSE;
+
+   /* Send EOI to the PICs */
+   outb(0x20,0x20);
+   if ((Vector-IRQ_BASE)>=8)
+     {
+	outb(0xa0,0x20);
+     }
+
+   *OldIrql = KeGetCurrentIrql();
+   if (Vector-IRQ_BASE != 0)
+     {
+	DPRINT("old_level %d\n",*OldIrql);
+     }
+   KeSetCurrentIrql(Irql);
+
+   return TRUE;
+}
+
+
+VOID STDCALL HalEndSystemInterrupt (KIRQL Irql,
+				    ULONG Unknown2)
+{
+   KeSetCurrentIrql(Irql);
+}
+
+
+BOOLEAN STDCALL HalDisableSystemInterrupt (ULONG Vector,
+					   ULONG Unknown2)
+{
+   ULONG irq;
+
+   if (Vector < IRQ_BASE || Vector > IRQ_BASE + NR_IRQS)
+	return FALSE;
+
+   irq = Vector - IRQ_BASE;
+   if (irq<8)
+     {
+	outb(0x21,inb(0x21)|(1<<irq));
+     }
+   else
+     {
+	outb(0xa1,inb(0xa1)|(1<<(irq-8)));
+     }
+
+   return TRUE;
+}
+
+
+BOOLEAN STDCALL HalEnableSystemInterrupt (ULONG Vector,
+					  ULONG Unknown2,
+					  ULONG Unknown3)
+{
+   ULONG irq;
+
+   if (Vector < IRQ_BASE || Vector > IRQ_BASE + NR_IRQS)
+	return FALSE;
+
+   irq = Vector - IRQ_BASE;
+   if (irq<8)
+     {
+	outb(0x21,inb(0x21)&(~(1<<irq)));
+     }
+   else
+     {
+	outb(0xa1,inb(0xa1)&(~(1<<(irq-8))));
+     }
+
+   return TRUE;
+}
+
 /* EOF */

reactos/ntoskrnl/include/internal/i386/hal.h

@@ -29,6 +29,9 @@ VOID HalResetDisplay (VOID);
 
 VOID HalpInitBusHandlers (VOID);
 
+/* irql.c */
+VOID HalpInitPICs(VOID);
+
 /* udelay.c */
 VOID HalpCalibrateStallExecution(VOID);
 

reactos/ntoskrnl/ke/i386/irq.c

@@ -1,4 +1,4 @@
-/* $Id: irq.c,v 1.1 2000/07/10 21:54:51 ekohl Exp $
+/* $Id: irq.c,v 1.2 2000/07/24 23:51:46 ekohl Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -23,7 +23,6 @@
 #include <internal/ke.h>
 #include <internal/ps.h>
 #include <internal/i386/segment.h>
-#include <internal/halio.h>
 
 #define NDEBUG
 #include <internal/debug.h>
@@ -92,13 +91,6 @@ VOID KeInitInterrupts (VOID)
    
    DPRINT("KeInitInterrupts ()\n",0);
    
-   /*
-    * First mask off all interrupts from pic
-    */
-   outb(0x21,0xff);
-   outb(0xa1,0xff);
-   
-   
    /*
     * Setup the IDT entries to point to the interrupt handlers
     */
@@ -128,12 +120,9 @@ VOID KiInterruptDispatch (ULONG irq)
    /*
     * Notify the rest of the kernel of the raised irq level
     */
-   old_level = KeGetCurrentIrql();
-   if (irq != 0)
-     {
-	DPRINT("old_level %d\n",old_level);
-     }
-   KeSetCurrentIrql(HIGH_LEVEL - irq);
+   HalBeginSystemInterrupt (irq+IRQ_BASE,
+			    HIGH_LEVEL-irq,
+			    &old_level);
    
    /*
     * Enable interrupts
@@ -168,26 +157,10 @@ VOID KiInterruptDispatch (ULONG irq)
     */
    __asm__("cli\n\t");
    
-   /*
-    * Send EOI to the PIC
-    */
-   outb(0x20,0x20);
-   if (irq>=8)
-     {
-	outb(0xa0,0x20);
-     }
-   
    /*
     * Unmask the related irq
     */
-   if (irq<8)
-     {
-	outb(0x21,inb(0x21)&(~(1<<irq)));
-     }
-   else
-     {
-	outb(0xa1,inb(0xa1)&(~(1<<(irq-8))));
-     }
+   HalEnableSystemInterrupt (irq + IRQ_BASE, 0, 0);
    
    /*
     * If the processor level will drop below dispatch level on return then
@@ -195,7 +168,7 @@ VOID KiInterruptDispatch (ULONG irq)
     */
    if (old_level < DISPATCH_LEVEL)
      {
-	KeSetCurrentIrql(DISPATCH_LEVEL);
+	HalEndSystemInterrupt (DISPATCH_LEVEL, 0);
 	__asm__("sti\n\t");
 
 	if (irq == 0)
@@ -209,7 +182,8 @@ VOID KiInterruptDispatch (ULONG irq)
      {
 //	DbgPrint("$");
      }
-   KeSetCurrentIrql(old_level);
+
+   HalEndSystemInterrupt (old_level, 0);
 //   DbgPrint("}");
 }