pic.c File Reference

#include <hal.h>
#include <debug.h>

Include dependency graph for pic.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
VOID	HalpInitializeInterrupts (VOID)
ULONG	HalGetInterruptSource (VOID)
KIRQL NTAPI	KeGetCurrentIrql (VOID)
KIRQL NTAPI	KeRaiseIrqlToDpcLevel (VOID)
KIRQL NTAPI	KeRaiseIrqlToSynchLevel (VOID)
KIRQL FASTCALL	KfRaiseIrql (IN KIRQL NewIrql)
VOID FASTCALL	KfLowerIrql (IN KIRQL NewIrql)
VOID FASTCALL	HalRequestSoftwareInterrupt (IN KIRQL Irql)
VOID FASTCALL	HalClearSoftwareInterrupt (IN KIRQL Irql)
BOOLEAN NTAPI	HalEnableSystemInterrupt (IN ULONG Vector, IN KIRQL Irql, IN KINTERRUPT_MODE InterruptMode)
VOID NTAPI	HalDisableSystemInterrupt (IN ULONG Vector, IN KIRQL Irql)
BOOLEAN NTAPI	HalBeginSystemInterrupt (IN KIRQL Irql, IN ULONG Vector, OUT PKIRQL OldIrql)
VOID NTAPI	HalEndSystemInterrupt (IN KIRQL OldIrql, IN PKTRAP_FRAME TrapFrame)

Variables
ULONG	HalpIrqlTable [HIGH_LEVEL+1]
UCHAR	HalpMaskTable [HIGH_LEVEL+1]

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file pic.c.

Function Documentation

HalBeginSystemInterrupt()

BOOLEAN NTAPI HalBeginSystemInterrupt	(	IN KIRQL	Irql,
		IN ULONG	Vector,
		OUT PKIRQL	OldIrql
	)

Definition at line 321 of file pic.c.

{
    UNIMPLEMENTED;
    while (TRUE);
    return FALSE;
}

Referenced by HalpClockInterruptHandler(), HalpClockIpiHandler(), KiChainedDispatch(), KiInterruptDispatch(), and KiUnexpectedInterruptTailHandler().

HalClearSoftwareInterrupt()

VOID FASTCALL HalClearSoftwareInterrupt

(

IN KIRQL

Irql

)

Definition at line 282 of file pic.c.

{
    /* Clear software interrupt */
    WRITE_REGISTER_ULONG(VIC_SOFT_INT_CLEAR, 1 << Irql);
}

Referenced by KiApcInterrupt(), KiIdleLoop(), and KiInterruptHandler().

HalDisableSystemInterrupt()

VOID NTAPI HalDisableSystemInterrupt	(	IN ULONG	Vector,
		IN KIRQL	Irql
	)

Definition at line 309 of file pic.c.

{
    UNIMPLEMENTED;
    while (TRUE);
}

Referenced by HalpInitializeTsc(), KeDisconnectInterrupt(), and VideoPortDisableInterrupt().

HalEnableSystemInterrupt()

BOOLEAN NTAPI HalEnableSystemInterrupt	(	IN ULONG	Vector,
		IN KIRQL	Irql,
		IN KINTERRUPT_MODE	InterruptMode
	)

Definition at line 295 of file pic.c.

{
    UNIMPLEMENTED;
    while (TRUE);
    return FALSE;
}

Referenced by HalpEnableInterruptHandler(), HalpInitializeClock(), HalpInitializeTsc(), KeConnectInterrupt(), and VideoPortEnableInterrupt().

HalEndSystemInterrupt()

VOID NTAPI HalEndSystemInterrupt	(	IN KIRQL	OldIrql,
		IN PKTRAP_FRAME	TrapFrame
	)

Definition at line 335 of file pic.c.

{
    UNIMPLEMENTED;
    while (TRUE);
}

Referenced by KiEndInterrupt(), and KiExitInterrupt().

HalGetInterruptSource()

ULONG HalGetInterruptSource

(

VOID

)

Definition at line 108 of file pic.c.

{
    ULONG InterruptStatus;
 
    /* Get the interrupt status, and return the highest bit set */
    InterruptStatus = READ_REGISTER_ULONG(VIC_INT_STATUS);
    return 31 - _clz(InterruptStatus);
}

Referenced by KiInterruptHandler().

HalpInitializeInterrupts()

VOID HalpInitializeInterrupts

(

VOID

)

Definition at line 93 of file pic.c.

{
    PKPCR Pcr = KeGetPcr();
 
    /* Fill out the IRQL mappings */
    RtlCopyMemory(Pcr->IrqlTable, HalpIrqlTable, sizeof(Pcr->IrqlTable));
    RtlCopyMemory(Pcr->IrqlMask, HalpMaskTable, sizeof(Pcr->IrqlMask));
}

Referenced by HalInitSystem().

HalRequestSoftwareInterrupt()

VOID FASTCALL HalRequestSoftwareInterrupt

(

IN KIRQL

Irql

)

Definition at line 271 of file pic.c.

{
    /* Force a software interrupt */
    WRITE_REGISTER_ULONG(VIC_SOFT_INT, 1 << Irql);
}

Referenced by KeDetachProcess(), KeFlushQueuedDpcs(), KeInsertQueueDpc(), KeSetTimerEx(), KeUnstackDetachProcess(), KeUpdateRunTime(), KiCheckForKernelApcDelivery(), KiCheckForTimerExpiration(), KiCompleteTimer(), KiExitDispatcher(), KiInsertQueueApc(), KiIpiServiceRoutine(), KiSwapContextExit(), and KiSwapContextResume().

KeGetCurrentIrql()

KIRQL NTAPI KeGetCurrentIrql

(

VOID

)

Definition at line 122 of file pic.c.

{
    /* Return the IRQL */
    return KeGetPcr()->Irql;
}

KeRaiseIrqlToDpcLevel()

KIRQL NTAPI KeRaiseIrqlToDpcLevel

(

VOID

)

Definition at line 133 of file pic.c.

{
    PKPCR Pcr = KeGetPcr();
    KIRQL CurrentIrql;
 
    /* Save and update IRQL */
    CurrentIrql = Pcr->Irql;
    Pcr->Irql = DISPATCH_LEVEL;
 
#ifdef IRQL_DEBUG
    /* Validate correct raise */
    if (CurrentIrql > DISPATCH_LEVEL) KeBugCheck(IRQL_NOT_GREATER_OR_EQUAL);
#endif
 
    /* Return the previous value */
    return CurrentIrql;
}

KeRaiseIrqlToSynchLevel()

KIRQL NTAPI KeRaiseIrqlToSynchLevel

(

VOID

)

Definition at line 156 of file pic.c.

{
    PKPCR Pcr = KeGetPcr();
    KIRQL CurrentIrql;
 
    /* Save and update IRQL */
    CurrentIrql = Pcr->Irql;
    Pcr->Irql = SYNCH_LEVEL;
 
#ifdef IRQL_DEBUG
    /* Validate correct raise */
    if (CurrentIrql > SYNCH_LEVEL)
    {
        /* Crash system */
        KeBugCheckEx(IRQL_NOT_GREATER_OR_EQUAL,
                     CurrentIrql,
                     SYNCH_LEVEL,
                     0,
                     1);
    }
#endif
 
    /* Return the previous value */
    return CurrentIrql;
}

Referenced by _Requires_lock_not_held_(), KeDelayExecutionThread(), KeFlushEntireTb(), KeQueryBasePriorityThread(), KeRemoveQueue(), KeSignalGateBoostPriority(), KeWaitForMultipleObjects(), KeWaitForSingleObject(), KiRetireDpcList(), and NtYieldExecution().

KfLowerIrql()

VOID FASTCALL KfLowerIrql

(

IN KIRQL

NewIrql

)

Definition at line 232 of file pic.c.

{
    ARM_STATUS_REGISTER Flags;
    PKPCR Pcr = KeGetPcr();
    ULONG InterruptMask;
 
    /* Disableinterrupts */
    Flags = KeArmStatusRegisterGet();
    _disable();
 
#ifdef IRQL_DEBUG
    /* Validate correct lower */
    if (OldIrql > Pcr->Irql)
    {
        /* Crash system */
        Pcr->Irql = HIGH_LEVEL;
        KeBugCheck(IRQL_NOT_LESS_OR_EQUAL);
    }
#endif
 
    /* Clear interrupts associated to the old IRQL */
    WRITE_REGISTER_ULONG(VIC_INT_CLEAR, 0xFFFFFFFF);
 
    /* Set the new interrupt mask */
    InterruptMask = Pcr->IrqlTable[NewIrql];
    WRITE_REGISTER_ULONG(VIC_INT_ENABLE, InterruptMask);
 
    /* Save the new IRQL and restore interrupt state */
    Pcr->Irql = NewIrql;
    if (!Flags.IrqDisable) _enable();
}

Referenced by HalpGrowMapBufferWorker(), KeLowerIrql(), KeQueryPerformanceCounter(), KeReleaseInStackQueuedSpinLock(), KeReleaseQueuedSpinLock(), KiChainedDispatch(), KiCheckForApcDelivery(), KiExitV86Trap(), KiInitializeSystem(), and KiThreadStartup().

KfRaiseIrql()

KIRQL FASTCALL KfRaiseIrql

(

IN KIRQL

NewIrql

)

Definition at line 187 of file pic.c.

{
    ARM_STATUS_REGISTER Flags;
    PKPCR Pcr = KeGetPcr();
    KIRQL CurrentIrql;
    ULONG InterruptMask;
 
    /* Disable interrupts */
    Flags = KeArmStatusRegisterGet();
    _disable();
 
    /* Read current IRQL */
    CurrentIrql = Pcr->Irql;
 
#ifdef IRQL_DEBUG
    /* Validate correct raise */
    if (CurrentIrql > NewIrql)
    {
        /* Crash system */
        Pcr->Irql = PASSIVE_LEVEL;
        KeBugCheck(IRQL_NOT_GREATER_OR_EQUAL);
    }
#endif
    /* Clear interrupts associated to the old IRQL */
    WRITE_REGISTER_ULONG(VIC_INT_CLEAR, 0xFFFFFFFF);
 
    /* Set the new interrupt mask */
    InterruptMask = Pcr->IrqlTable[NewIrql];
    WRITE_REGISTER_ULONG(VIC_INT_ENABLE, InterruptMask);
 
    /* Set new IRQL */
    Pcr->Irql = NewIrql;
 
    /* Restore interrupt state */
    if (!Flags.IrqDisable) _enable();
 
    /* Return old IRQL */
    return CurrentIrql;
}

Referenced by _IRQL_requires_max_(), _Requires_lock_not_held_(), HalInitSystem(), HalpGrowMapBufferWorker(), KeAcquireInStackQueuedSpinLock(), KeAcquireInStackQueuedSpinLockRaiseToSynch(), KeAcquireQueuedSpinLock(), KeAcquireQueuedSpinLockRaiseToSynch(), KeAcquireSpinLockRaiseToSynch(), KeQueryPerformanceCounter(), KeRaiseIrql(), KeRaiseIrqlToSynchLevel(), KeSynchronizeExecution(), KfAcquireSpinLock(), KiAcquireDispatcherLock(), KiChainedDispatch(), KiCheckForApcDelivery(), KiExitV86Trap(), KiIdleLoop(), KiInitializeKernel(), KiInitializeSystem(), KiInterruptHandler(), KiSystemStartup(), KiSystemStartupBootStack(), and KxRaiseIrql().

Variable Documentation

HalpIrqlTable

ULONG HalpIrqlTable[HIGH_LEVEL+1]

Definition at line 19 of file pic.c.

Referenced by HalpInitializeInterrupts().

HalpMaskTable

UCHAR HalpMaskTable[HIGH_LEVEL+1]

Definition at line 55 of file pic.c.

Referenced by HalpInitializeInterrupts().