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/*++
Copyright (c) 1994 Digital Equipment Corporation
Module Name:
halprof.c
Abstract:
This module implements the high level Profile Counter interface.
N.B. - This module assumes that all processors in a multiprocessor
system are running the microprocessor at the same clock speed.
Author:
Steve Brooks 14-Feb-1995
Environment:
Kernel mode
Revision History:
--*/
#include "halp.h"
NTSTATUS
HalpProfileSourceInformation (
OUT PVOID Buffer,
IN ULONG BufferLength,
OUT PULONG ReturnedLength
)
/*++
Routine Description:
Returns the HAL_PROFILE_SOURCE_INFORMATION for this processor.
Arguments:
Buffer - output buffer
BufferLength - length of buffer on input
ReturnedLength - The length of data returned
Return Value:
STATUS_SUCCESS
STATUS_BUFFER_TOO_SMALL - The ReturnedLength contains the buffersize
currently needed.
--*/
{
PHAL_PROFILE_SOURCE_INFORMATION SourceInfo;
NTSTATUS Status;
if (BufferLength != sizeof(HAL_PROFILE_SOURCE_INFORMATION)) {
Status = STATUS_INFO_LENGTH_MISMATCH;
return Status;
}
SourceInfo = (PHAL_PROFILE_SOURCE_INFORMATION)Buffer;
SourceInfo->Supported = HalQueryProfileInterval(SourceInfo->Source);
if (SourceInfo->Supported) {
SourceInfo->Interval =
HalpProfileMapping[SourceInfo->Source].EventCount *
HalpProfileMapping[SourceInfo->Source].NumberOfTicks;
}
Status = STATUS_SUCCESS;
return Status;
}
NTSTATUS
HalpProfileSourceInterval (
OUT PVOID Buffer,
IN ULONG BufferLength
)
/*++
Routine Description:
Returns the HAL_PROFILE_SOURCE_INTERVAL for this processor.
Arguments:
Buffer - output buffer
BufferLength - length of buffer on input
Return Value:
STATUS_SUCCESS
STATUS_BUFFER_TOO_SMALL - The ReturnedLength contains the buffersize
currently needed.
--*/
{
PHAL_PROFILE_SOURCE_INTERVAL Interval;
NTSTATUS Status;
if (BufferLength != sizeof(HAL_PROFILE_SOURCE_INTERVAL)) {
Status = STATUS_INFO_LENGTH_MISMATCH;
return Status;
}
Interval = (PHAL_PROFILE_SOURCE_INTERVAL)Buffer;
Status = HalSetProfileSourceInterval(Interval->Source,
&Interval->Interval);
return Status;
}
BOOLEAN
HalQueryProfileInterval(
IN KPROFILE_SOURCE Source
)
/*++
Routine Description:
Given a profile source, returns whether or not that source is
supported.
Arguments:
Source - Supplies the profile source
Return Value:
TRUE - Profile source is supported
FALSE - Profile source is not supported
--*/
{
if (Source >= ProfileMaximum) {
return(FALSE);
}
return(HalpProfileMapping[Source].Supported);
}
ULONG
HalSetProfileInterval (
IN ULONG Interval
)
/*++
Routine Description:
This routine sets the profile interrupt interval.
Arguments:
Interval - Supplies the desired profile interval in 100ns units.
Return Value:
The actual profile interval.
--*/
{
ULONG NewInterval;
NewInterval = Interval;
HalSetProfileSourceInterval(ProfileTime, &NewInterval);
return(NewInterval);
}
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