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[HALXBOX] Fix clock drift (#2889)

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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 2020-06-03 05:14:16 +06:00 committed by GitHub
parent 092bc78a42
commit 17c5fb8866
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 76 additions and 24 deletions
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32
hal/halx86/generic/clock.c Normal file
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@ -0,0 +1,32 @@
/*
* PROJECT: ReactOS Hardware Abstraction Layer
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: PIT rollover table
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
* Timo Kreuzer (timo.kreuzer@reactos.org)
*/
/* INCLUDES ******************************************************************/
#include <hal.h>
/* GLOBALS *******************************************************************/
HALP_ROLLOVER HalpRolloverTable[15] =
{
{1197, 10032}, /* 1 ms */
{2394, 20064},
{3591, 30096},
{4767, 39952},
{5964, 49984},
{7161, 60016},
{8358, 70048},
{9555, 80080},
{10731, 89936},
{11949, 100144},
{13125, 110000},
{14322, 120032},
{15519, 130064},
{16695, 139920},
{17892, 149952} /* 15 ms */
};

28
hal/halx86/generic/timer.c
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@ -10,6 +10,7 @@
/* INCLUDES ******************************************************************/
#include <hal.h>
#define NDEBUG
#include <debug.h>
@ -21,6 +22,8 @@
#define PIT_LATCH 0x00
extern HALP_ROLLOVER HalpRolloverTable[15];
LARGE_INTEGER HalpLastPerfCounter;
LARGE_INTEGER HalpPerfCounter;
ULONG HalpPerfCounterCutoff;
@ -30,29 +33,6 @@ ULONG HalpCurrentRollOver;
ULONG HalpNextMSRate = 14;
ULONG HalpLargestClockMS = 15;
static struct _HALP_ROLLOVER
{
ULONG RollOver;
ULONG Increment;
} HalpRolloverTable[15] =
{
{1197, 10032},
{2394, 20064},
{3591, 30096},
{4767, 39952},
{5964, 49984},
{7161, 60016},
{8358, 70048},
{9555, 80080},
{10731, 89936},
{11949, 100144},
{13125, 110000},
{14322, 120032},
{15519, 130064},
{16695, 139920},
{17892, 149952}
};
/* PRIVATE FUNCTIONS *********************************************************/
FORCEINLINE
@ -88,7 +68,7 @@ HalpSetTimerRollOver(USHORT RollOver)
TimerControl.BcdMode = FALSE;
/*
* Program the PIT to generate a normal rate wave (Mode 3) on channel 0.
* Program the PIT to generate a normal rate wave (Mode 2) on channel 0.
* Channel 0 is used for the IRQ0 clock interval timer, and channel
* 1 is used for DRAM refresh.
*

6
hal/halx86/include/halp.h
View file

@ -223,6 +223,12 @@ INIT_FUNCTION VOID NTAPI HalpInitializeClock(VOID);
VOID __cdecl HalpClockInterrupt(VOID);
VOID __cdecl HalpProfileInterrupt(VOID);
typedef struct _HALP_ROLLOVER
{
ULONG RollOver;
ULONG Increment;
} HALP_ROLLOVER, *PHALP_ROLLOVER;
VOID
NTAPI
HalpCalibrateStallExecution(VOID);

1
hal/halx86/minihal/CMakeLists.txt
View file

@ -9,6 +9,7 @@ list(APPEND MINI_HAL_SOURCE
../legacy/bussupp.c
../generic/beep.c
../generic/bios.c
../generic/clock.c
../generic/cmos.c
../generic/dma.c
../generic/display.c

1
hal/halx86/pic.cmake
View file

@ -5,6 +5,7 @@ list(APPEND HAL_PIC_ASM_SOURCE
up/pic.S)
list(APPEND HAL_PIC_SOURCE
generic/clock.c
generic/profil.c
generic/timer.c
up/halinit_up.c

1
hal/halx86/xbox.cmake
View file

@ -31,6 +31,7 @@ list(APPEND HAL_XBOX_SOURCE
legacy/halpcat.c
generic/profil.c
generic/timer.c
xbox/clock.c
xbox/part_xbox.c
xbox/halinit_xbox.c
xbox/reboot.c

31
hal/halx86/xbox/clock.c Normal file
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@ -0,0 +1,31 @@
/*
* PROJECT: Xbox HAL
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
* PURPOSE: PIT rollover table
* COPYRIGHT: Copyright 2020 Dmitry Borisov (di.sean@protonmail.com)
*/
/* INCLUDES ******************************************************************/
#include <hal.h>
/* GLOBALS *******************************************************************/
HALP_ROLLOVER HalpRolloverTable[15] =
{
{1125, 10000}, /* 1 ms */
{2250, 20000},
{3375, 30000},
{4500, 40000},
{5625, 50000},
{6750, 60000},
{7875, 70000},
{9000, 80000},
{10125, 90000},
{11250, 100000},
{12375, 110000},
{13500, 120000},
{14625, 130000},
{15750, 140000},
{16875, 150000} /* 15 ms */
};