994 lines
21 KiB
C
994 lines
21 KiB
C
/*++
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Copyright (c) 1992-1998 Microsoft Corporation
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Copyright (c) 1993 Digital Equipment Corporation
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Module Name:
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flushtb.c
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Abstract:
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This module implements machine dependent functions to flush the
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translation buffers and synchronize PIDs in an Alpha AXP MP system.
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N.B. This module contains only MP versions of the TB flush routines.
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The UP versions are macros in ke.h
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KeFlushEntireTb remains a routine for the UP system since it is
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exported from the kernel for backwards compatibility.
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Author:
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David N. Cutler (davec) 13-May-1989
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Joe Notarangelo 29-Nov-1993
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Environment:
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Kernel mode only.
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Revision History:
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--*/
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#include "ki.h"
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//
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// Define forward referenced prototypes.
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//
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VOID
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KiFlushEntireTbTarget (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Parameter1,
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IN PVOID Parameter2,
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IN PVOID Parameter3
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);
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VOID
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KiFlushMultipleTbTarget (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Number,
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IN PVOID Virtual,
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IN PVOID Pid
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);
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VOID
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KiFlushSingleTbTarget (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Virtual,
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IN PVOID Pid,
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IN PVOID Parameter3
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);
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VOID
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KiFlushMultipleTbTarget64 (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Number,
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IN PVOID Virtual,
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IN PVOID Pid
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);
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VOID
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KiFlushSingleTbTarget64 (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Virtual,
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IN PVOID Pid,
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IN PVOID Parameter3
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);
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#if !defined(NT_UP)
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VOID
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KeFlushEntireTb (
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IN BOOLEAN Invalid,
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IN BOOLEAN AllProcessors
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)
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/*++
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Routine Description:
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This function flushes the entire translation buffer (TB) on all
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processors that are currently running threads which are children
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of the current process or flushes the entire translation buffer
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on all processors in the host configuration.
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Arguments:
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Invalid - Supplies a boolean value that specifies the reason for
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flushing the translation buffer.
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AllProcessors - Supplies a boolean value that determines which
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translation buffers are to be flushed.
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Return Value:
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None.
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--*/
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{
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KAFFINITY EntireSet;
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KIRQL OldIrql;
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PKPROCESS Process;
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PKTHREAD Thread;
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KAFFINITY TargetProcessors;
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//
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// Compute the target set of processors, disable context switching,
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// and send the flush entire parameters to the target processors,
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// if any, for execution.
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//
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if (AllProcessors != FALSE) {
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OldIrql = KeRaiseIrqlToSynchLevel();
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TargetProcessors = KeActiveProcessors;
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} else {
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KiLockContextSwap(&OldIrql);
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Thread = KeGetCurrentThread();
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Process = Thread->ApcState.Process;
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TargetProcessors = Process->ActiveProcessors;
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if (TargetProcessors != Process->RunOnProcessors) {
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Process->ProcessSequence = KiMasterSequence - 1;
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}
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}
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EntireSet = KeActiveProcessors & PCR->NotMember;
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TargetProcessors &= PCR->NotMember;
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//
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// If the target set fo processors is equal to the full set of processors,
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// then set the TB flush time stamp busy.
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//
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if (TargetProcessors == EntireSet) {
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KiSetTbFlushTimeStampBusy();
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}
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//
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// Send packet to target processors.
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//
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if (TargetProcessors != 0) {
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KiIpiSendPacket(TargetProcessors,
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KiFlushEntireTbTarget,
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NULL,
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NULL,
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NULL);
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}
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IPI_INSTRUMENT_COUNT(KeGetCurrentPrcb()->Number, FlushEntireTb);
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//
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// Flush TB on current processor.
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//
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// KeFlushCurrentTb();
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__tbia();
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//
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// Wait until all target processors have finished.
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//
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if (TargetProcessors != 0) {
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KiIpiStallOnPacketTargets(TargetProcessors);
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}
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//
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// If the target set of processors is equal to the full set of processors,
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// then clear the TB flush time stamp busy.
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//
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if (TargetProcessors == EntireSet) {
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KiClearTbFlushTimeStampBusy();
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}
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//
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// Lower IRQL and unlock as appropriate.
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//
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if (AllProcessors != FALSE) {
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KeLowerIrql(OldIrql);
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} else {
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KiUnlockContextSwap(OldIrql);
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}
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return;
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}
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VOID
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KiFlushEntireTbTarget (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Parameter1,
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IN PVOID Parameter2,
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IN PVOID Parameter3
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)
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/*++
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Routine Description:
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This is the target function for flushing the entire TB.
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Arguments:
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SignalDone - Supplies a pointer to a variable that is cleared when the
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requested operation has been performed.
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Parameter1 - Parameter3 - not used
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Return Value:
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None.
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--*/
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{
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//
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// Flush the entire TB on the current processor
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//
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KiIpiSignalPacketDone(SignalDone);
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// KeFlushCurrentTb();
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__tbia();
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IPI_INSTRUMENT_COUNT(KeGetCurrentPrcb()->Number, FlushEntireTb);
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return;
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}
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VOID
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KeFlushMultipleTb (
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IN ULONG Number,
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IN PVOID *Virtual,
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IN BOOLEAN Invalid,
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IN BOOLEAN AllProcessors,
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IN PHARDWARE_PTE *PtePointer OPTIONAL,
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IN HARDWARE_PTE PteValue
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)
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/*++
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Routine Description:
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This function flushes multiple entries from the translation buffer
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on all processors that are currently running threads which are
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children of the current process or flushes a multiple entries from
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the translation buffer on all processors in the host configuration.
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Arguments:
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Number - Supplies the number of TB entries to flush.
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Virtual - Supplies a pointer to an array of virtual addresses that
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are within the pages whose translation buffer entries are to be
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flushed.
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Invalid - Supplies a boolean value that specifies the reason for
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flushing the translation buffer.
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AllProcessors - Supplies a boolean value that determines which
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translation buffers are to be flushed.
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PtePointer - Supplies an optional pointer to an array of pointers to
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page table entries that receive the specified page table entry
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value.
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PteValue - Supplies the the new page table entry value.
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Return Value:
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The previous contents of the specified page table entry is returned
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as the function value.
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--*/
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{
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ULONG Index;
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KIRQL OldIrql;
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PKPROCESS Process;
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KAFFINITY TargetProcessors;
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PKTHREAD Thread;
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//
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// Compute the target set of processors and send the flush multiple
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// parameters to the target processors, if any, for execution.
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//
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if (AllProcessors != FALSE) {
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OldIrql = KeRaiseIrqlToSynchLevel();
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TargetProcessors = KeActiveProcessors;
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} else {
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KiLockContextSwap(&OldIrql);
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Thread = KeGetCurrentThread();
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Process = Thread->ApcState.Process;
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TargetProcessors = Process->ActiveProcessors;
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if (TargetProcessors != Process->RunOnProcessors) {
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Process->ProcessSequence = KiMasterSequence - 1;
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}
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}
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//
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// If a page table entry address address is specified, then set the
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// specified page table entries to the specific value.
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//
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if (ARGUMENT_PRESENT(PtePointer)) {
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for (Index = 0; Index < Number; Index += 1) {
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*PtePointer[Index] = PteValue;
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}
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}
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TargetProcessors &= PCR->NotMember;
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if (TargetProcessors != 0) {
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KiIpiSendPacket(TargetProcessors,
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KiFlushMultipleTbTarget,
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ULongToPtr(Number),
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(PVOID)Virtual,
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NULL);
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}
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IPI_INSTRUMENT_COUNT(KeGetCurrentPrcb()->Number, FlushMultipleTb);
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//
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// Flush the specified entries from the TB on the current processor.
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//
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KiFlushMultipleTb(Invalid, &Virtual[0], Number);
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//
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// Wait until all target processors have finished.
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//
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if (TargetProcessors != 0) {
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KiIpiStallOnPacketTargets(TargetProcessors);
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}
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//
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// If the context swap lock was acquired, release it.
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//
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if (AllProcessors != FALSE) {
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KeLowerIrql(OldIrql);
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} else {
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KiUnlockContextSwap(OldIrql);
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}
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return;
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}
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VOID
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KiFlushMultipleTbTarget (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Number,
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IN PVOID Virtual,
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IN PVOID Pid
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)
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/*++
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Routine Description:
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This is the target function for flushing multiple TB entries.
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Arguments:
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SignalDone Supplies a pointer to a variable that is cleared when the
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requested operation has been performed.
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Number - Supplies the number of TB entries to flush.
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Virtual - Supplies a pointer to an array of virtual addresses that
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are within the pages whose translation buffer entries are to be
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flushed.
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Pid - Supplies the PID of the TB entries to flush.
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Return Value:
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None.
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--*/
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{
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ULONG Index;
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ULONG Limit;
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PVOID Array[FLUSH_MULTIPLE_MAXIMUM];
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//
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// Flush multiple entries from the TB on the current processor
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//
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//
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// Capture the virtual addresses that are to be flushed from the TB
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// on the current processor and clear the packet address.
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//
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Limit = (ULONG)((ULONG_PTR)Number);
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for (Index = 0; Index < Limit; Index += 1) {
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Array[Index] = ((PVOID *)(Virtual))[Index];
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}
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KiIpiSignalPacketDone(SignalDone);
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//
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// Flush the specified virtual addresses from the TB on the current
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// processor.
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//
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KiFlushMultipleTb(TRUE, &Array[0], Limit);
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IPI_INSTRUMENT_COUNT(KeGetCurrentPrcb()->Number, FlushMultipleTb);
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return;
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}
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HARDWARE_PTE
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KeFlushSingleTb (
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IN PVOID Virtual,
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IN BOOLEAN Invalid,
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IN BOOLEAN AllProcessors,
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IN PHARDWARE_PTE PtePointer,
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IN HARDWARE_PTE PteValue
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)
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/*++
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Routine Description:
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This function flushes a single entry from the translation buffer
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on all processors that are currently running threads which are
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children of the current process or flushes a single entry from
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the translation buffer on all processors in the host configuration.
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Arguments:
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Virtual - Supplies a virtual address that is within the page whose
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translation buffer entry is to be flushed.
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Invalid - Supplies a boolean value that specifies the reason for
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flushing the translation buffer.
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AllProcessors - Supplies a boolean value that determines which
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translation buffers are to be flushed.
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PtePointer - Supplies a pointer to the page table entry which
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receives the specified value.
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PteValue - Supplies the the new page table entry value.
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Return Value:
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The previous contents of the specified page table entry is returned
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as the function value.
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--*/
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{
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KIRQL OldIrql;
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HARDWARE_PTE OldPte;
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PKPROCESS Process;
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KAFFINITY TargetProcessors;
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PKTHREAD Thread;
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//
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// Compute the target set of processors and send the flush single
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// paramters to the target processors, if any, for execution.
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//
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if (AllProcessors != FALSE) {
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OldIrql = KeRaiseIrqlToSynchLevel();
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TargetProcessors = KeActiveProcessors;
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} else {
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KiLockContextSwap(&OldIrql);
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Thread = KeGetCurrentThread();
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Process = Thread->ApcState.Process;
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TargetProcessors = Process->ActiveProcessors;
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if (TargetProcessors != Process->RunOnProcessors) {
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Process->ProcessSequence = KiMasterSequence - 1;
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}
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}
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//
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// Capture the previous contents of the page table entry and set the
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// page table entry to the new value.
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//
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OldPte = *PtePointer;
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*PtePointer = PteValue;
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TargetProcessors &= PCR->NotMember;
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if (TargetProcessors != 0) {
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KiIpiSendPacket(TargetProcessors,
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KiFlushSingleTbTarget,
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(PVOID)Virtual,
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NULL,
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NULL);
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}
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IPI_INSTRUMENT_COUNT(KeGetCurrentPrcb()->Number, FlushSingleTb);
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//
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// Flush the specified entry from the TB on the current processor.
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//
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// KiFlushSingleTb(Invalid, Virtual);
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__tbis(Virtual);
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//
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// Wait until all target processors have finished.
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//
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if (TargetProcessors != 0) {
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KiIpiStallOnPacketTargets(TargetProcessors);
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}
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if (AllProcessors != FALSE) {
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KeLowerIrql(OldIrql);
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} else {
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KiUnlockContextSwap(OldIrql);
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}
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//
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// return the previous page table entry value.
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//
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return OldPte;
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}
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VOID
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KiFlushSingleTbTarget (
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IN PKIPI_CONTEXT SignalDone,
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IN PVOID Virtual,
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IN PVOID Pid,
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IN PVOID Parameter3
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)
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/*++
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Routine Description:
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This is the target function for flushing a single TB entry.
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Arguments:
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SignalDone Supplies a pointer to a variable that is cleared when the
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requested operation has been performed.
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Virtual - Supplies a virtual address that is within the page whose
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translation buffer entry is to be flushed.
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RequestPacket - Supplies a pointer to a flush single TB packet address.
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Pid - Supplies the PID of the TB entries to flush.
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Parameter3 - Not used.
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Return Value:
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None.
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--*/
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{
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//
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// Flush a single entry form the TB on the current processor.
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//
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KiIpiSignalPacketDone(SignalDone);
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// KiFlushSingleTb(TRUE, Virtual);
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__tbis(Virtual);
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IPI_INSTRUMENT_COUNT(KeGetCurrentPrcb()->Number, FlushSingleTb);
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return;
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}
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#endif // !defined(NT_UP)
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VOID
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KeFlushMultipleTb64 (
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IN ULONG Number,
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IN PULONG_PTR Virtual,
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IN BOOLEAN Invalid,
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IN BOOLEAN AllProcessors,
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IN PHARDWARE_PTE *PtePointer OPTIONAL,
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IN HARDWARE_PTE PteValue
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)
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/*++
|
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|
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Routine Description:
|
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|
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This function flushes multiple entries from the translation buffer
|
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on all processors that are currently running threads which are
|
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children of the current process or flushes a multiple entries from
|
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the translation buffer on all processors in the host configuration.
|
||
|
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Arguments:
|
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|
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Number - Supplies the number of TB entries to flush.
|
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|
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Virtual - Supplies a pointer to an array of virtual page numbers that
|
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are flushed from the TB.
|
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|
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Invalid - Supplies a boolean value that specifies the reason for
|
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flushing the translation buffer.
|
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|
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AllProcessors - Supplies a boolean value that determines which
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translation buffers are to be flushed.
|
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|
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PtePointer - Supplies an optional pointer to an array of pointers to
|
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page table entries that receive the specified page table entry
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value.
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|
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PteValue - Supplies the the new page table entry value.
|
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Return Value:
|
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|
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The previous contents of the specified page table entry is returned
|
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as the function value.
|
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|
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--*/
|
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|
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{
|
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|
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ULONG Index;
|
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KIRQL OldIrql;
|
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PKPROCESS Process;
|
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KAFFINITY TargetProcessors;
|
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PKTHREAD Thread;
|
||
|
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ASSERT(Number <= FLUSH_MULTIPLE_MAXIMUM);
|
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|
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//
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// Compute the target set of processors.
|
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//
|
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|
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#if defined(NT_UP)
|
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|
||
OldIrql = KeRaiseIrqlToSynchLevel();
|
||
|
||
#else
|
||
|
||
if (AllProcessors != FALSE) {
|
||
OldIrql = KeRaiseIrqlToSynchLevel();
|
||
TargetProcessors = KeActiveProcessors;
|
||
|
||
} else {
|
||
KiLockContextSwap(&OldIrql);
|
||
Thread = KeGetCurrentThread();
|
||
Process = Thread->ApcState.Process;
|
||
TargetProcessors = Process->ActiveProcessors;
|
||
if (TargetProcessors != Process->RunOnProcessors) {
|
||
Process->ProcessSequence = KiMasterSequence - 1;
|
||
}
|
||
}
|
||
|
||
TargetProcessors &= PCR->NotMember;
|
||
|
||
#endif
|
||
|
||
//
|
||
// If a page table entry address array is specified, then set the
|
||
// specified page table entries to the specific value.
|
||
//
|
||
|
||
if (ARGUMENT_PRESENT(PtePointer)) {
|
||
for (Index = 0; Index < Number; Index += 1) {
|
||
*PtePointer[Index] = PteValue;
|
||
}
|
||
}
|
||
|
||
//
|
||
// If any target processors are specified, then send a flush multiple
|
||
// packet to the target set of processor.
|
||
//
|
||
|
||
#if !defined(NT_UP)
|
||
|
||
if (TargetProcessors != 0) {
|
||
KiIpiSendPacket(TargetProcessors,
|
||
KiFlushMultipleTbTarget64,
|
||
ULongToPtr(Number),
|
||
(PVOID)Virtual,
|
||
NULL);
|
||
}
|
||
|
||
#endif
|
||
|
||
//
|
||
// Flush the specified entries from the TB on the current processor.
|
||
//
|
||
|
||
KiFlushMultipleTb64(Invalid, &Virtual[0], Number);
|
||
|
||
//
|
||
// Wait until all target processors have finished.
|
||
//
|
||
|
||
#if defined(NT_UP)
|
||
|
||
KeLowerIrql(OldIrql);
|
||
|
||
#else
|
||
|
||
if (TargetProcessors != 0) {
|
||
KiIpiStallOnPacketTargets(TargetProcessors);
|
||
}
|
||
|
||
if (AllProcessors != FALSE) {
|
||
KeLowerIrql(OldIrql);
|
||
|
||
} else {
|
||
KiUnlockContextSwap(OldIrql);
|
||
}
|
||
|
||
#endif
|
||
|
||
return;
|
||
}
|
||
|
||
#if !defined(NT_UP)
|
||
|
||
|
||
VOID
|
||
KiFlushMultipleTbTarget64 (
|
||
IN PKIPI_CONTEXT SignalDone,
|
||
IN PVOID Number,
|
||
IN PVOID Virtual,
|
||
IN PVOID Pid
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This is the target function for flushing multiple TB entries.
|
||
|
||
Arguments:
|
||
|
||
SignalDone Supplies a pointer to a variable that is cleared when the
|
||
requested operation has been performed.
|
||
|
||
Number - Supplies the number of TB entries to flush.
|
||
|
||
Virtual - Supplies a pointer to an array of virtual page numbers that
|
||
are flushed from the TB.
|
||
|
||
Pid - Supplies the PID of the TB entries to flush.
|
||
|
||
Return Value:
|
||
|
||
None.
|
||
|
||
--*/
|
||
|
||
{
|
||
|
||
ULONG Index;
|
||
ULONG Limit;
|
||
ULONG_PTR Array[FLUSH_MULTIPLE_MAXIMUM];
|
||
|
||
ASSERT((ULONG_PTR)Number <= FLUSH_MULTIPLE_MAXIMUM);
|
||
|
||
//
|
||
// Capture the virtual addresses that are to be flushed from the TB
|
||
// on the current processor and clear the packet address.
|
||
//
|
||
|
||
Limit = (ULONG)((ULONG_PTR)Number);
|
||
for (Index = 0; Index < Limit; Index += 1) {
|
||
Array[Index] = ((PULONG_PTR)(Virtual))[Index];
|
||
}
|
||
|
||
KiIpiSignalPacketDone(SignalDone);
|
||
|
||
//
|
||
// Flush the specified virtual addresses from the TB on the current
|
||
// processor.
|
||
//
|
||
|
||
KiFlushMultipleTb64(TRUE, &Array[0], Limit);
|
||
return;
|
||
}
|
||
|
||
#endif
|
||
|
||
|
||
HARDWARE_PTE
|
||
KeFlushSingleTb64 (
|
||
IN ULONG_PTR Virtual,
|
||
IN BOOLEAN Invalid,
|
||
IN BOOLEAN AllProcessors,
|
||
IN PHARDWARE_PTE PtePointer,
|
||
IN HARDWARE_PTE PteValue
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This function flushes a single entry from the translation buffer
|
||
on all processors that are currently running threads which are
|
||
children of the current process or flushes a single entry from
|
||
the translation buffer on all processors in the host configuration.
|
||
|
||
Arguments:
|
||
|
||
Virtual - Supplies a virtual page number that is flushed from the TB.
|
||
|
||
Invalid - Supplies a boolean value that specifies the reason for
|
||
flushing the translation buffer.
|
||
|
||
AllProcessors - Supplies a boolean value that determines which
|
||
translation buffers are to be flushed.
|
||
|
||
PtePointer - Supplies a pointer to the page table entry which
|
||
receives the specified value.
|
||
|
||
PteValue - Supplies the the new page table entry value.
|
||
|
||
Return Value:
|
||
|
||
The previous contents of the specified page table entry is returned
|
||
as the function value.
|
||
|
||
--*/
|
||
|
||
{
|
||
|
||
KIRQL OldIrql;
|
||
HARDWARE_PTE OldPte;
|
||
PKPROCESS Process;
|
||
KAFFINITY TargetProcessors;
|
||
PKTHREAD Thread;
|
||
|
||
//
|
||
// Compute the target set of processors.
|
||
//
|
||
|
||
#if defined(NT_UP)
|
||
|
||
OldIrql = KeRaiseIrqlToSynchLevel();
|
||
|
||
#else
|
||
|
||
if (AllProcessors != FALSE) {
|
||
OldIrql = KeRaiseIrqlToSynchLevel();
|
||
TargetProcessors = KeActiveProcessors;
|
||
|
||
} else {
|
||
KiLockContextSwap(&OldIrql);
|
||
Thread = KeGetCurrentThread();
|
||
Process = Thread->ApcState.Process;
|
||
TargetProcessors = Process->ActiveProcessors;
|
||
if (TargetProcessors != Process->RunOnProcessors) {
|
||
Process->ProcessSequence = KiMasterSequence - 1;
|
||
}
|
||
}
|
||
|
||
TargetProcessors &= PCR->NotMember;
|
||
|
||
#endif
|
||
|
||
//
|
||
// Capture the previous contents of the page table entry and set the
|
||
// page table entry to the new value.
|
||
//
|
||
|
||
OldPte = *PtePointer;
|
||
*PtePointer = PteValue;
|
||
|
||
//
|
||
// If any target processors are specified, then send a flush single
|
||
// packet to the target set of processors.
|
||
|
||
#if !defined(NT_UP)
|
||
|
||
if (TargetProcessors != 0) {
|
||
KiIpiSendPacket(TargetProcessors,
|
||
KiFlushSingleTbTarget64,
|
||
(PVOID)Virtual,
|
||
NULL,
|
||
NULL);
|
||
}
|
||
|
||
#endif
|
||
|
||
//
|
||
// Flush the specified entry from the TB on the current processor.
|
||
//
|
||
|
||
KiFlushSingleTb64(Invalid, Virtual);
|
||
|
||
//
|
||
// Wait until all target processors have finished.
|
||
//
|
||
|
||
#if defined(NT_UP)
|
||
|
||
KeLowerIrql(OldIrql);
|
||
|
||
#else
|
||
|
||
if (TargetProcessors != 0) {
|
||
KiIpiStallOnPacketTargets(TargetProcessors);
|
||
}
|
||
|
||
if (AllProcessors != FALSE) {
|
||
KeLowerIrql(OldIrql);
|
||
|
||
} else {
|
||
KiUnlockContextSwap(OldIrql);
|
||
}
|
||
|
||
#endif
|
||
|
||
return OldPte;
|
||
}
|
||
|
||
#if !defined(NT_UP)
|
||
|
||
|
||
VOID
|
||
KiFlushSingleTbTarget64 (
|
||
IN PKIPI_CONTEXT SignalDone,
|
||
IN PVOID Virtual,
|
||
IN PVOID Pid,
|
||
IN PVOID Parameter3
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
This is the target function for flushing a single TB entry.
|
||
|
||
Arguments:
|
||
|
||
SignalDone Supplies a pointer to a variable that is cleared when the
|
||
requested operation has been performed.
|
||
|
||
Virtual - Supplies a virtual page number that is flushed from the TB.
|
||
|
||
RequestPacket - Supplies a pointer to a flush single TB packet address.
|
||
|
||
Pid - Not used.
|
||
|
||
Parameter3 - Not used.
|
||
|
||
Return Value:
|
||
|
||
None.
|
||
|
||
--*/
|
||
|
||
{
|
||
|
||
//
|
||
// Flush a single entry form the TB on the current processor.
|
||
//
|
||
|
||
KiIpiSignalPacketDone(SignalDone);
|
||
KiFlushSingleTb64(TRUE, (ULONG_PTR)Virtual);
|
||
return;
|
||
}
|
||
|
||
#endif
|