reactos/ntoskrnl/ke/krnlinit.c

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/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL - See COPYING in the top level directory
* FILE: ntoskrnl/ke/krnlinit.c
* PURPOSE: Portable part of kernel initialization
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
*/
/* INCLUDES ******************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
#include <internal/napi.h>
/* GLOBALS *******************************************************************/
/* Portable CPU Features and Flags */
USHORT KeProcessorArchitecture;
USHORT KeProcessorLevel;
USHORT KeProcessorRevision;
ULONG KeFeatureBits;
KAFFINITY KeActiveProcessors = 1;
/* System call count */
ULONG KiServiceLimit = NUMBER_OF_SYSCALLS;
/* ARC Loader Block */
PLOADER_PARAMETER_BLOCK KeLoaderBlock;
/* PRCB Array */
PKPRCB KiProcessorBlock[MAXIMUM_PROCESSORS];
/* Number of processors */
CCHAR KeNumberProcessors = 0;
/* NUMA Node Support */
KNODE KiNode0;
PKNODE KeNodeBlock[1] = { &KiNode0 };
UCHAR KeNumberNodes = 1;
UCHAR KeProcessNodeSeed;
/* Initial Process and Thread */
ETHREAD KiInitialThread;
EPROCESS KiInitialProcess;
/* System-defined Spinlocks */
KSPIN_LOCK KiDispatcherLock;
KSPIN_LOCK MmPfnLock;
KSPIN_LOCK MmSystemSpaceLock;
KSPIN_LOCK CcBcbSpinLock;
KSPIN_LOCK CcMasterSpinLock;
KSPIN_LOCK CcVacbSpinLock;
KSPIN_LOCK CcWorkQueueSpinLock;
KSPIN_LOCK NonPagedPoolLock;
KSPIN_LOCK MmNonPagedPoolLock;
KSPIN_LOCK IopCancelSpinLock;
KSPIN_LOCK IopVpbSpinLock;
KSPIN_LOCK IopDatabaseLock;
KSPIN_LOCK IopCompletionLock;
KSPIN_LOCK NtfsStructLock;
KSPIN_LOCK AfdWorkQueueSpinLock;
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KSPIN_LOCK KiTimerTableLock[LOCK_QUEUE_TIMER_TABLE_LOCKS];
KSPIN_LOCK KiReverseStallIpiLock;
/* FUNCTIONS *****************************************************************/
CODE_SEG("INIT")
VOID
NTAPI
KiInitSystem(VOID)
{
ULONG i;
/* Initialize Bugcheck Callback data */
InitializeListHead(&KeBugcheckCallbackListHead);
InitializeListHead(&KeBugcheckReasonCallbackListHead);
KeInitializeSpinLock(&BugCheckCallbackLock);
/* Initialize the Timer Expiration DPC */
KeInitializeDpc(&KiTimerExpireDpc, KiTimerExpiration, NULL);
KeSetTargetProcessorDpc(&KiTimerExpireDpc, 0);
/* Initialize Profiling data */
KeInitializeSpinLock(&KiProfileLock);
InitializeListHead(&KiProfileListHead);
InitializeListHead(&KiProfileSourceListHead);
/* Loop the timer table */
for (i = 0; i < TIMER_TABLE_SIZE; i++)
{
/* Initialize the list and entries */
InitializeListHead(&KiTimerTableListHead[i].Entry);
KiTimerTableListHead[i].Time.HighPart = 0xFFFFFFFF;
KiTimerTableListHead[i].Time.LowPart = 0;
}
/* Initialize the Swap event and all swap lists */
KeInitializeEvent(&KiSwapEvent, SynchronizationEvent, FALSE);
InitializeListHead(&KiProcessInSwapListHead);
InitializeListHead(&KiProcessOutSwapListHead);
InitializeListHead(&KiStackInSwapListHead);
/* Initialize the mutex for generic DPC calls */
ExInitializeFastMutex(&KiGenericCallDpcMutex);
/* Initialize the syscall table */
KeServiceDescriptorTable[0].Base = MainSSDT;
KeServiceDescriptorTable[0].Count = NULL;
KeServiceDescriptorTable[0].Limit = KiServiceLimit;
KeServiceDescriptorTable[1].Limit = 0;
KeServiceDescriptorTable[0].Number = MainSSPT;
/* Copy the the current table into the shadow table for win32k */
RtlCopyMemory(KeServiceDescriptorTableShadow,
KeServiceDescriptorTable,
sizeof(KeServiceDescriptorTable));
}
CODE_SEG("INIT")
LARGE_INTEGER
NTAPI
KiComputeReciprocal(IN LONG Divisor,
OUT PUCHAR Shift)
{
LARGE_INTEGER Reciprocal = {{0, 0}};
LONG BitCount = 0, Remainder = 1;
/* Start by calculating the remainder */
while (Reciprocal.HighPart >= 0)
{
/* Increase the loop (bit) count */
BitCount++;
/* Calculate the current fraction */
Reciprocal.HighPart = (Reciprocal.HighPart << 1) |
(Reciprocal.LowPart >> 31);
Reciprocal.LowPart <<= 1;
/* Double the remainder and see if we went past the divisor */
Remainder <<= 1;
if (Remainder >= Divisor)
{
/* Set the low-bit and calculate the new remainder */
Remainder -= Divisor;
Reciprocal.LowPart |= 1;
}
}
/* Check if we have a remainder */
if (Remainder)
{
/* Check if the current fraction value is too large */
if ((Reciprocal.LowPart == 0xFFFFFFFF) &&
(Reciprocal.HighPart == (LONG)0xFFFFFFFF))
{
/* Set the high bit and reduce the bit count */
Reciprocal.LowPart = 0;
Reciprocal.HighPart = 0x80000000;
BitCount--;
}
else
{
/* Check if only the lowest bits got too large */
if (Reciprocal.LowPart == 0xFFFFFFFF)
{
/* Reset them and increase the high bits instead */
Reciprocal.LowPart = 0;
Reciprocal.HighPart++;
}
else
{
/* All is well, increase the low bits */
Reciprocal.LowPart++;
}
}
}
/* Now calculate the actual shift and return the reciprocal */
*Shift = (UCHAR)BitCount - 64;
return Reciprocal;
}
CODE_SEG("INIT")
VOID
NTAPI
KiInitSpinLocks(IN PKPRCB Prcb,
IN CCHAR Number)
{
ULONG i;
/* Initialize Dispatcher Fields */
Prcb->QueueIndex = 1;
Prcb->ReadySummary = 0;
Prcb->DeferredReadyListHead.Next = NULL;
for (i = 0; i < MAXIMUM_PRIORITY; i++)
{
/* Initialize the ready list */
InitializeListHead(&Prcb->DispatcherReadyListHead[i]);
}
/* Initialize DPC Fields */
InitializeListHead(&Prcb->DpcData[DPC_NORMAL].DpcListHead);
KeInitializeSpinLock(&Prcb->DpcData[DPC_NORMAL].DpcLock);
Prcb->DpcData[DPC_NORMAL].DpcQueueDepth = 0;
Prcb->DpcData[DPC_NORMAL].DpcCount = 0;
Prcb->DpcRoutineActive = FALSE;
Prcb->MaximumDpcQueueDepth = KiMaximumDpcQueueDepth;
Prcb->MinimumDpcRate = KiMinimumDpcRate;
Prcb->AdjustDpcThreshold = KiAdjustDpcThreshold;
KeInitializeDpc(&Prcb->CallDpc, NULL, NULL);
KeSetTargetProcessorDpc(&Prcb->CallDpc, Number);
KeSetImportanceDpc(&Prcb->CallDpc, HighImportance);
/* Initialize the Wait List Head */
InitializeListHead(&Prcb->WaitListHead);
/* Initialize Queued Spinlocks */
Prcb->LockQueue[LockQueueDispatcherLock].Next = NULL;
Prcb->LockQueue[LockQueueDispatcherLock].Lock = &KiDispatcherLock;
Prcb->LockQueue[LockQueueExpansionLock].Next = NULL;
Prcb->LockQueue[LockQueueExpansionLock].Lock = NULL;
Prcb->LockQueue[LockQueuePfnLock].Next = NULL;
Prcb->LockQueue[LockQueuePfnLock].Lock = &MmPfnLock;
Prcb->LockQueue[LockQueueSystemSpaceLock].Next = NULL;
Prcb->LockQueue[LockQueueSystemSpaceLock].Lock = &MmSystemSpaceLock;
Prcb->LockQueue[LockQueueBcbLock].Next = NULL;
Prcb->LockQueue[LockQueueBcbLock].Lock = &CcBcbSpinLock;
Prcb->LockQueue[LockQueueMasterLock].Next = NULL;
Prcb->LockQueue[LockQueueMasterLock].Lock = &CcMasterSpinLock;
Prcb->LockQueue[LockQueueVacbLock].Next = NULL;
Prcb->LockQueue[LockQueueVacbLock].Lock = &CcVacbSpinLock;
Prcb->LockQueue[LockQueueWorkQueueLock].Next = NULL;
Prcb->LockQueue[LockQueueWorkQueueLock].Lock = &CcWorkQueueSpinLock;
Prcb->LockQueue[LockQueueNonPagedPoolLock].Next = NULL;
Prcb->LockQueue[LockQueueNonPagedPoolLock].Lock = &NonPagedPoolLock;
Prcb->LockQueue[LockQueueMmNonPagedPoolLock].Next = NULL;
Prcb->LockQueue[LockQueueMmNonPagedPoolLock].Lock = &MmNonPagedPoolLock;
Prcb->LockQueue[LockQueueIoCancelLock].Next = NULL;
Prcb->LockQueue[LockQueueIoCancelLock].Lock = &IopCancelSpinLock;
Prcb->LockQueue[LockQueueIoVpbLock].Next = NULL;
Prcb->LockQueue[LockQueueIoVpbLock].Lock = &IopVpbSpinLock;
Prcb->LockQueue[LockQueueIoDatabaseLock].Next = NULL;
Prcb->LockQueue[LockQueueIoDatabaseLock].Lock = &IopDatabaseLock;
Prcb->LockQueue[LockQueueIoCompletionLock].Next = NULL;
Prcb->LockQueue[LockQueueIoCompletionLock].Lock = &IopCompletionLock;
Prcb->LockQueue[LockQueueNtfsStructLock].Next = NULL;
Prcb->LockQueue[LockQueueNtfsStructLock].Lock = &NtfsStructLock;
Prcb->LockQueue[LockQueueAfdWorkQueueLock].Next = NULL;
Prcb->LockQueue[LockQueueAfdWorkQueueLock].Lock = &AfdWorkQueueSpinLock;
Prcb->LockQueue[LockQueueUnusedSpare16].Next = NULL;
Prcb->LockQueue[LockQueueUnusedSpare16].Lock = NULL;
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/* Loop timer locks (shared amongst all CPUs) */
for (i = 0; i < LOCK_QUEUE_TIMER_TABLE_LOCKS; i++)
{
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/* Setup the Queued Spinlock (done only once by the boot CPU) */
if (!Number)
KeInitializeSpinLock(&KiTimerTableLock[i]);
/* Initialize the lock */
Prcb->LockQueue[LockQueueTimerTableLock + i].Next = NULL;
Prcb->LockQueue[LockQueueTimerTableLock + i].Lock =
&KiTimerTableLock[i];
}
/* Initialize the PRCB lock */
KeInitializeSpinLock(&Prcb->PrcbLock);
/* Check if this is the boot CPU */
if (!Number)
{
/* Initialize the lock themselves */
KeInitializeSpinLock(&KiDispatcherLock);
KeInitializeSpinLock(&KiReverseStallIpiLock);
KeInitializeSpinLock(&MmPfnLock);
KeInitializeSpinLock(&MmSystemSpaceLock);
KeInitializeSpinLock(&CcBcbSpinLock);
KeInitializeSpinLock(&CcMasterSpinLock);
KeInitializeSpinLock(&CcVacbSpinLock);
KeInitializeSpinLock(&CcWorkQueueSpinLock);
KeInitializeSpinLock(&IopCancelSpinLock);
KeInitializeSpinLock(&IopCompletionLock);
KeInitializeSpinLock(&IopDatabaseLock);
KeInitializeSpinLock(&IopVpbSpinLock);
KeInitializeSpinLock(&NonPagedPoolLock);
KeInitializeSpinLock(&MmNonPagedPoolLock);
KeInitializeSpinLock(&NtfsStructLock);
KeInitializeSpinLock(&AfdWorkQueueSpinLock);
}
}
CODE_SEG("INIT")
BOOLEAN
NTAPI
KeInitSystem(VOID)
{
/* Check if Threaded DPCs are enabled */
if (KeThreadDpcEnable)
{
/* FIXME: TODO */
DPRINT1("Threaded DPCs not yet supported\n");
}
/* Initialize non-portable parts of the kernel */
KiInitMachineDependent();
return TRUE;
}