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[HALXBOX] Fix clock drift (#2889)
Add a new rollover table for Original Xbox (base frequency is 1.125000 MHz). This fixes potential time issues in kernel and drivers. CORE-16216
This commit is contained in:
Dmitry Borisov
GitHub
parent
092bc78a42
commit
17c5fb8866
7 changed files with 76 additions and 24 deletions
32
hal/halx86/generic/clock.c
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32
hal/halx86/generic/clock.c
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@ -0,0 +1,32 @@
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/*
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* PROJECT: ReactOS Hardware Abstraction Layer
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* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: PIT rollover table
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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* Timo Kreuzer (timo.kreuzer@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <hal.h>
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/* GLOBALS *******************************************************************/
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HALP_ROLLOVER HalpRolloverTable[15] =
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{
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{1197, 10032}, /* 1 ms */
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{2394, 20064},
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{3591, 30096},
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{4767, 39952},
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{5964, 49984},
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{7161, 60016},
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{8358, 70048},
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{9555, 80080},
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{10731, 89936},
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{11949, 100144},
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{13125, 110000},
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{14322, 120032},
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{15519, 130064},
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{16695, 139920},
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{17892, 149952} /* 15 ms */
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};
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@ -10,6 +10,7 @@
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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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@ -21,6 +22,8 @@
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#define PIT_LATCH 0x00
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extern HALP_ROLLOVER HalpRolloverTable[15];
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LARGE_INTEGER HalpLastPerfCounter;
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LARGE_INTEGER HalpPerfCounter;
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ULONG HalpPerfCounterCutoff;
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@ -30,29 +33,6 @@ ULONG HalpCurrentRollOver;
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ULONG HalpNextMSRate = 14;
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ULONG HalpLargestClockMS = 15;
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static struct _HALP_ROLLOVER
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{
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ULONG RollOver;
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ULONG Increment;
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} HalpRolloverTable[15] =
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{
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{1197, 10032},
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{2394, 20064},
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{3591, 30096},
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{4767, 39952},
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{5964, 49984},
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{7161, 60016},
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{8358, 70048},
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{9555, 80080},
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{10731, 89936},
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{11949, 100144},
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{13125, 110000},
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{14322, 120032},
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{15519, 130064},
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{16695, 139920},
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{17892, 149952}
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};
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/* PRIVATE FUNCTIONS *********************************************************/
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FORCEINLINE
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@ -88,7 +68,7 @@ HalpSetTimerRollOver(USHORT RollOver)
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TimerControl.BcdMode = FALSE;
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/*
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* Program the PIT to generate a normal rate wave (Mode 3) on channel 0.
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* Program the PIT to generate a normal rate wave (Mode 2) on channel 0.
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* Channel 0 is used for the IRQ0 clock interval timer, and channel
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* 1 is used for DRAM refresh.
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*
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@ -223,6 +223,12 @@ INIT_FUNCTION VOID NTAPI HalpInitializeClock(VOID);
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VOID __cdecl HalpClockInterrupt(VOID);
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VOID __cdecl HalpProfileInterrupt(VOID);
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typedef struct _HALP_ROLLOVER
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{
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ULONG RollOver;
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ULONG Increment;
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} HALP_ROLLOVER, *PHALP_ROLLOVER;
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VOID
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NTAPI
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HalpCalibrateStallExecution(VOID);
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@ -9,6 +9,7 @@ list(APPEND MINI_HAL_SOURCE
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../legacy/bussupp.c
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../generic/beep.c
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../generic/bios.c
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../generic/clock.c
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../generic/cmos.c
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../generic/dma.c
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../generic/display.c
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@ -5,6 +5,7 @@ list(APPEND HAL_PIC_ASM_SOURCE
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up/pic.S)
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list(APPEND HAL_PIC_SOURCE
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generic/clock.c
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generic/profil.c
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generic/timer.c
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up/halinit_up.c
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@ -31,6 +31,7 @@ list(APPEND HAL_XBOX_SOURCE
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legacy/halpcat.c
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generic/profil.c
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generic/timer.c
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xbox/clock.c
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xbox/part_xbox.c
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xbox/halinit_xbox.c
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xbox/reboot.c
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31
hal/halx86/xbox/clock.c
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31
hal/halx86/xbox/clock.c
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@ -0,0 +1,31 @@
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/*
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* PROJECT: Xbox 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: PIT rollover table
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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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/* GLOBALS *******************************************************************/
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HALP_ROLLOVER HalpRolloverTable[15] =
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{
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{1125, 10000}, /* 1 ms */
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{2250, 20000},
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{3375, 30000},
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{4500, 40000},
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{5625, 50000},
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{6750, 60000},
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{7875, 70000},
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{9000, 80000},
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{10125, 90000},
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{11250, 100000},
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{12375, 110000},
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{13500, 120000},
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{14625, 130000},
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{15750, 140000},
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{16875, 150000} /* 15 ms */
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};
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