mirror of
https://github.com/reactos/reactos.git
synced 2024-11-18 21:13:52 +00:00
308 lines
10 KiB
C
308 lines
10 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/ke/krnlinit.c
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* PURPOSE: Portable part of kernel initialization
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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#include <internal/napi.h>
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/* GLOBALS *******************************************************************/
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/* Portable CPU Features and Flags */
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USHORT KeProcessorArchitecture;
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USHORT KeProcessorLevel;
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USHORT KeProcessorRevision;
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ULONG KeFeatureBits;
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KAFFINITY KeActiveProcessors = 1;
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/* System call count */
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ULONG KiServiceLimit = NUMBER_OF_SYSCALLS;
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/* ARC Loader Block */
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PLOADER_PARAMETER_BLOCK KeLoaderBlock;
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/* PRCB Array */
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PKPRCB KiProcessorBlock[MAXIMUM_PROCESSORS];
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/* Number of processors */
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CCHAR KeNumberProcessors = 0;
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/* NUMA Node Support */
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KNODE KiNode0;
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PKNODE KeNodeBlock[1];
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UCHAR KeNumberNodes = 1;
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UCHAR KeProcessNodeSeed;
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/* Initial Process and Thread */
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ETHREAD KiInitialThread;
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EPROCESS KiInitialProcess;
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/* System-defined Spinlocks */
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KSPIN_LOCK KiDispatcherLock;
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KSPIN_LOCK MmPfnLock;
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KSPIN_LOCK MmSystemSpaceLock;
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KSPIN_LOCK CcBcbSpinLock;
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KSPIN_LOCK CcMasterSpinLock;
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KSPIN_LOCK CcVacbSpinLock;
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KSPIN_LOCK CcWorkQueueSpinLock;
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KSPIN_LOCK NonPagedPoolLock;
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KSPIN_LOCK MmNonPagedPoolLock;
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KSPIN_LOCK IopCancelSpinLock;
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KSPIN_LOCK IopVpbSpinLock;
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KSPIN_LOCK IopDatabaseLock;
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KSPIN_LOCK IopCompletionLock;
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KSPIN_LOCK NtfsStructLock;
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KSPIN_LOCK AfdWorkQueueSpinLock;
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KSPIN_LOCK KiTimerTableLock[LOCK_QUEUE_TIMER_TABLE_LOCKS];
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KSPIN_LOCK KiReverseStallIpiLock;
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/* FUNCTIONS *****************************************************************/
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CODE_SEG("INIT")
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VOID
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NTAPI
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KiInitSystem(VOID)
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{
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ULONG i;
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/* Initialize Bugcheck Callback data */
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InitializeListHead(&KeBugcheckCallbackListHead);
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InitializeListHead(&KeBugcheckReasonCallbackListHead);
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KeInitializeSpinLock(&BugCheckCallbackLock);
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/* Initialize the Timer Expiration DPC */
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KeInitializeDpc(&KiTimerExpireDpc, KiTimerExpiration, NULL);
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KeSetTargetProcessorDpc(&KiTimerExpireDpc, 0);
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/* Initialize Profiling data */
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KeInitializeSpinLock(&KiProfileLock);
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InitializeListHead(&KiProfileListHead);
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InitializeListHead(&KiProfileSourceListHead);
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/* Loop the timer table */
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for (i = 0; i < TIMER_TABLE_SIZE; i++)
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{
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/* Initialize the list and entries */
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InitializeListHead(&KiTimerTableListHead[i].Entry);
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KiTimerTableListHead[i].Time.HighPart = 0xFFFFFFFF;
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KiTimerTableListHead[i].Time.LowPart = 0;
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}
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/* Initialize the Swap event and all swap lists */
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KeInitializeEvent(&KiSwapEvent, SynchronizationEvent, FALSE);
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InitializeListHead(&KiProcessInSwapListHead);
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InitializeListHead(&KiProcessOutSwapListHead);
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InitializeListHead(&KiStackInSwapListHead);
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/* Initialize the mutex for generic DPC calls */
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ExInitializeFastMutex(&KiGenericCallDpcMutex);
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/* Initialize the syscall table */
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KeServiceDescriptorTable[0].Base = MainSSDT;
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KeServiceDescriptorTable[0].Count = NULL;
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KeServiceDescriptorTable[0].Limit = KiServiceLimit;
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KeServiceDescriptorTable[1].Limit = 0;
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KeServiceDescriptorTable[0].Number = MainSSPT;
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/* Copy the the current table into the shadow table for win32k */
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RtlCopyMemory(KeServiceDescriptorTableShadow,
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KeServiceDescriptorTable,
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sizeof(KeServiceDescriptorTable));
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}
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CODE_SEG("INIT")
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LARGE_INTEGER
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NTAPI
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KiComputeReciprocal(IN LONG Divisor,
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OUT PUCHAR Shift)
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{
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LARGE_INTEGER Reciprocal = {{0, 0}};
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LONG BitCount = 0, Remainder = 1;
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/* Start by calculating the remainder */
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while (Reciprocal.HighPart >= 0)
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{
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/* Increase the loop (bit) count */
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BitCount++;
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/* Calculate the current fraction */
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Reciprocal.HighPart = (Reciprocal.HighPart << 1) |
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(Reciprocal.LowPart >> 31);
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Reciprocal.LowPart <<= 1;
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/* Double the remainder and see if we went past the divisor */
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Remainder <<= 1;
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if (Remainder >= Divisor)
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{
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/* Set the low-bit and calculate the new remainder */
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Remainder -= Divisor;
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Reciprocal.LowPart |= 1;
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}
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}
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/* Check if we have a remainder */
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if (Remainder)
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{
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/* Check if the current fraction value is too large */
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if ((Reciprocal.LowPart == 0xFFFFFFFF) &&
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(Reciprocal.HighPart == (LONG)0xFFFFFFFF))
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{
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/* Set the high bit and reduce the bit count */
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Reciprocal.LowPart = 0;
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Reciprocal.HighPart = 0x80000000;
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BitCount--;
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}
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else
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{
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/* Check if only the lowest bits got too large */
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if (Reciprocal.LowPart == 0xFFFFFFFF)
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{
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/* Reset them and increase the high bits instead */
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Reciprocal.LowPart = 0;
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Reciprocal.HighPart++;
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}
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else
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{
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/* All is well, increase the low bits */
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Reciprocal.LowPart++;
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}
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}
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}
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/* Now calculate the actual shift and return the reciprocal */
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*Shift = (UCHAR)BitCount - 64;
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return Reciprocal;
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}
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CODE_SEG("INIT")
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VOID
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NTAPI
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KiInitSpinLocks(IN PKPRCB Prcb,
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IN CCHAR Number)
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{
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ULONG i;
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/* Initialize Dispatcher Fields */
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Prcb->QueueIndex = 1;
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Prcb->ReadySummary = 0;
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Prcb->DeferredReadyListHead.Next = NULL;
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for (i = 0; i < MAXIMUM_PRIORITY; i++)
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{
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/* Initialize the ready list */
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InitializeListHead(&Prcb->DispatcherReadyListHead[i]);
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}
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/* Initialize DPC Fields */
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InitializeListHead(&Prcb->DpcData[DPC_NORMAL].DpcListHead);
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KeInitializeSpinLock(&Prcb->DpcData[DPC_NORMAL].DpcLock);
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Prcb->DpcData[DPC_NORMAL].DpcQueueDepth = 0;
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Prcb->DpcData[DPC_NORMAL].DpcCount = 0;
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Prcb->DpcRoutineActive = FALSE;
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Prcb->MaximumDpcQueueDepth = KiMaximumDpcQueueDepth;
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Prcb->MinimumDpcRate = KiMinimumDpcRate;
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Prcb->AdjustDpcThreshold = KiAdjustDpcThreshold;
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KeInitializeDpc(&Prcb->CallDpc, NULL, NULL);
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KeSetTargetProcessorDpc(&Prcb->CallDpc, Number);
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KeSetImportanceDpc(&Prcb->CallDpc, HighImportance);
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/* Initialize the Wait List Head */
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InitializeListHead(&Prcb->WaitListHead);
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/* Initialize Queued Spinlocks */
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Prcb->LockQueue[LockQueueDispatcherLock].Next = NULL;
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Prcb->LockQueue[LockQueueDispatcherLock].Lock = &KiDispatcherLock;
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Prcb->LockQueue[LockQueueExpansionLock].Next = NULL;
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Prcb->LockQueue[LockQueueExpansionLock].Lock = NULL;
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Prcb->LockQueue[LockQueuePfnLock].Next = NULL;
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Prcb->LockQueue[LockQueuePfnLock].Lock = &MmPfnLock;
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Prcb->LockQueue[LockQueueSystemSpaceLock].Next = NULL;
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Prcb->LockQueue[LockQueueSystemSpaceLock].Lock = &MmSystemSpaceLock;
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Prcb->LockQueue[LockQueueBcbLock].Next = NULL;
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Prcb->LockQueue[LockQueueBcbLock].Lock = &CcBcbSpinLock;
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Prcb->LockQueue[LockQueueMasterLock].Next = NULL;
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Prcb->LockQueue[LockQueueMasterLock].Lock = &CcMasterSpinLock;
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Prcb->LockQueue[LockQueueVacbLock].Next = NULL;
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Prcb->LockQueue[LockQueueVacbLock].Lock = &CcVacbSpinLock;
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Prcb->LockQueue[LockQueueWorkQueueLock].Next = NULL;
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Prcb->LockQueue[LockQueueWorkQueueLock].Lock = &CcWorkQueueSpinLock;
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Prcb->LockQueue[LockQueueNonPagedPoolLock].Next = NULL;
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Prcb->LockQueue[LockQueueNonPagedPoolLock].Lock = &NonPagedPoolLock;
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Prcb->LockQueue[LockQueueMmNonPagedPoolLock].Next = NULL;
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Prcb->LockQueue[LockQueueMmNonPagedPoolLock].Lock = &MmNonPagedPoolLock;
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Prcb->LockQueue[LockQueueIoCancelLock].Next = NULL;
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Prcb->LockQueue[LockQueueIoCancelLock].Lock = &IopCancelSpinLock;
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Prcb->LockQueue[LockQueueIoVpbLock].Next = NULL;
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Prcb->LockQueue[LockQueueIoVpbLock].Lock = &IopVpbSpinLock;
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Prcb->LockQueue[LockQueueIoDatabaseLock].Next = NULL;
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Prcb->LockQueue[LockQueueIoDatabaseLock].Lock = &IopDatabaseLock;
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Prcb->LockQueue[LockQueueIoCompletionLock].Next = NULL;
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Prcb->LockQueue[LockQueueIoCompletionLock].Lock = &IopCompletionLock;
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Prcb->LockQueue[LockQueueNtfsStructLock].Next = NULL;
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Prcb->LockQueue[LockQueueNtfsStructLock].Lock = &NtfsStructLock;
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Prcb->LockQueue[LockQueueAfdWorkQueueLock].Next = NULL;
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Prcb->LockQueue[LockQueueAfdWorkQueueLock].Lock = &AfdWorkQueueSpinLock;
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Prcb->LockQueue[LockQueueUnusedSpare16].Next = NULL;
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Prcb->LockQueue[LockQueueUnusedSpare16].Lock = NULL;
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/* Loop timer locks (shared amongst all CPUs) */
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for (i = 0; i < LOCK_QUEUE_TIMER_TABLE_LOCKS; i++)
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{
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/* Setup the Queued Spinlock (done only once by the boot CPU) */
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if (!Number)
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KeInitializeSpinLock(&KiTimerTableLock[i]);
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/* Initialize the lock */
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Prcb->LockQueue[LockQueueTimerTableLock + i].Next = NULL;
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Prcb->LockQueue[LockQueueTimerTableLock + i].Lock =
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&KiTimerTableLock[i];
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}
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/* Initialize the PRCB lock */
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KeInitializeSpinLock(&Prcb->PrcbLock);
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/* Check if this is the boot CPU */
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if (!Number)
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{
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/* Initialize the lock themselves */
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KeInitializeSpinLock(&KiDispatcherLock);
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KeInitializeSpinLock(&KiReverseStallIpiLock);
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KeInitializeSpinLock(&MmPfnLock);
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KeInitializeSpinLock(&MmSystemSpaceLock);
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KeInitializeSpinLock(&CcBcbSpinLock);
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KeInitializeSpinLock(&CcMasterSpinLock);
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KeInitializeSpinLock(&CcVacbSpinLock);
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KeInitializeSpinLock(&CcWorkQueueSpinLock);
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KeInitializeSpinLock(&IopCancelSpinLock);
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KeInitializeSpinLock(&IopCompletionLock);
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KeInitializeSpinLock(&IopDatabaseLock);
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KeInitializeSpinLock(&IopVpbSpinLock);
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KeInitializeSpinLock(&NonPagedPoolLock);
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KeInitializeSpinLock(&MmNonPagedPoolLock);
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KeInitializeSpinLock(&NtfsStructLock);
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KeInitializeSpinLock(&AfdWorkQueueSpinLock);
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}
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}
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CODE_SEG("INIT")
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BOOLEAN
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NTAPI
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KeInitSystem(VOID)
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{
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/* Check if Threaded DPCs are enabled */
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if (KeThreadDpcEnable)
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{
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/* FIXME: TODO */
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DPRINT1("Threaded DPCs not yet supported\n");
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}
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/* Initialize non-portable parts of the kernel */
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KiInitMachineDependent();
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return TRUE;
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}
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