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75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
/*
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* PROJECT: NEC PC-98 series HAL
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: System Profiling
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* COPYRIGHT: Copyright 2020 Dmitry Borisov (di.sean@protonmail.com)
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*/
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/* INCLUDES ******************************************************************/
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#include <hal.h>
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS *******************************************************************/
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BOOLEAN HalpProfilingStopped = TRUE;
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UCHAR HalpProfileRate = 3;
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/* FUNCTIONS *****************************************************************/
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VOID
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NTAPI
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HalStopProfileInterrupt(
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_In_ KPROFILE_SOURCE ProfileSource)
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{
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UNREFERENCED_PARAMETER(ProfileSource);
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HalpAcquireCmosSpinLock();
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/* Clear the interrupt flag */
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(VOID)__inbyte(RTC_IO_i_INTERRUPT_RESET);
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HalpProfilingStopped = TRUE;
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HalpReleaseCmosSpinLock();
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}
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VOID
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NTAPI
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HalStartProfileInterrupt(
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_In_ KPROFILE_SOURCE ProfileSource)
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{
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UNREFERENCED_PARAMETER(ProfileSource);
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HalpProfilingStopped = FALSE;
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HalpAcquireCmosSpinLock();
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/* Configure the clock divisor for generating periodic interrupts */
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__outbyte(RTC_IO_o_INT_CLOCK_DIVISOR, HalpProfileRate | 0x80);
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HalpReleaseCmosSpinLock();
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}
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ULONG_PTR
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NTAPI
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HalSetProfileInterval(
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_In_ ULONG_PTR Interval)
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{
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/*
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* FIXME:
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* 1) What is the maximum and minimum interrupt frequency for the RTC?
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* 2) Find the maximum possible clock divisor value.
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*/
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UNIMPLEMENTED;
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/* Update interval */
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if (!HalpProfilingStopped)
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HalStartProfileInterrupt(0);
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/* For now... */
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return Interval;
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}
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