mirror of
https://github.com/Fennix-Project/Kernel.git
synced 2025-07-11 07:19:20 +00:00
Restructured and rewritten entire codebase
This commit is contained in:
Alex
100
core/time/hpet.cpp
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100
core/time/hpet.cpp
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@ -0,0 +1,100 @@
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <time.hpp>
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#include <memory.hpp>
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#include <acpi.hpp>
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#include <debug.h>
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#include <io.h>
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#include "../../kernel.h"
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namespace Time
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{
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bool HighPrecisionEventTimer::Sleep(size_t Duration, Units Unit)
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{
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#if defined(a64)
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uint64_t Target = mminq(&((HPET *)hpet)->MainCounterValue) + (Duration * ConvertUnit(Unit)) / clk;
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while (mminq(&((HPET *)hpet)->MainCounterValue) < Target)
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CPU::Pause();
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return true;
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#elif defined(a32)
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uint64_t Target = mminl(&((HPET *)hpet)->MainCounterValue) + (Duration * ConvertUnit(Unit)) / clk;
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while (mminl(&((HPET *)hpet)->MainCounterValue) < Target)
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CPU::Pause();
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return true;
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#endif
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return false;
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}
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uint64_t HighPrecisionEventTimer::GetCounter()
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{
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#if defined(a64)
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return mminq(&((HPET *)hpet)->MainCounterValue);
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#elif defined(a32)
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return mminl(&((HPET *)hpet)->MainCounterValue);
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#endif
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}
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uint64_t HighPrecisionEventTimer::CalculateTarget(uint64_t Target, Units Unit)
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{
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#if defined(a64)
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return mminq(&((HPET *)hpet)->MainCounterValue) + (Target * ConvertUnit(Unit)) / clk;
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#elif defined(a32)
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return mminl(&((HPET *)hpet)->MainCounterValue) + (Target * ConvertUnit(Unit)) / clk;
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#endif
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}
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uint64_t HighPrecisionEventTimer::GetNanosecondsSinceClassCreation()
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{
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#if defined(a86)
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uint64_t Subtraction = this->GetCounter() - this->ClassCreationTime;
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if (Subtraction <= 0 || this->clk <= 0)
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return 0;
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return uint64_t(Subtraction / (this->clk / ConvertUnit(Units::Nanoseconds)));
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#endif
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}
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HighPrecisionEventTimer::HighPrecisionEventTimer(void *hpet)
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{
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#if defined(a86)
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ACPI::ACPI::HPETHeader *HPET_HDR = (ACPI::ACPI::HPETHeader *)hpet;
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Memory::Virtual().Map((void *)HPET_HDR->Address.Address,
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(void *)HPET_HDR->Address.Address,
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Memory::PTFlag::RW | Memory::PTFlag::PCD);
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this->hpet = (HPET *)HPET_HDR->Address.Address;
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trace("%s timer is at address %016p", HPET_HDR->Header.OEMID, (void *)HPET_HDR->Address.Address);
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clk = s_cst(uint32_t, (uint64_t)this->hpet->GeneralCapabilities >> 32);
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debug("HPET clock is %u Hz", clk);
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#ifdef a64
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mmoutq(&this->hpet->GeneralConfiguration, 0);
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mmoutq(&this->hpet->MainCounterValue, 0);
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mmoutq(&this->hpet->GeneralConfiguration, 1);
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#else
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mmoutl(&this->hpet->GeneralConfiguration, 0);
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mmoutl(&this->hpet->MainCounterValue, 0);
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mmoutl(&this->hpet->GeneralConfiguration, 1);
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#endif
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ClassCreationTime = this->GetCounter();
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#endif
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}
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HighPrecisionEventTimer::~HighPrecisionEventTimer()
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{
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}
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}
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111
core/time/time.cpp
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111
core/time/time.cpp
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <time.hpp>
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#include <debug.h>
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#include <io.h>
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namespace Time
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{
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Clock ReadClock()
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{
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Clock tm;
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#if defined(a86)
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uint32_t t = 0;
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outb(0x70, 0x00);
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t = inb(0x71);
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tm.Second = ((t & 0x0F) + ((t >> 4) * 10));
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outb(0x70, 0x02);
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t = inb(0x71);
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tm.Minute = ((t & 0x0F) + ((t >> 4) * 10));
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outb(0x70, 0x04);
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t = inb(0x71);
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tm.Hour = ((t & 0x0F) + ((t >> 4) * 10));
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outb(0x70, 0x07);
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t = inb(0x71);
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tm.Day = ((t & 0x0F) + ((t >> 4) * 10));
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outb(0x70, 0x08);
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t = inb(0x71);
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tm.Month = ((t & 0x0F) + ((t >> 4) * 10));
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outb(0x70, 0x09);
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t = inb(0x71);
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tm.Year = ((t & 0x0F) + ((t >> 4) * 10));
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tm.Counter = 0;
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#elif defined(aa64)
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tm.Year = 0;
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tm.Month = 0;
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tm.Day = 0;
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tm.Hour = 0;
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tm.Minute = 0;
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tm.Second = 0;
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tm.Counter = 0;
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#endif
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return tm;
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}
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Clock ConvertFromUnix(int Timestamp)
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{
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Clock result;
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uint64_t Seconds = Timestamp;
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uint64_t Minutes = Seconds / 60;
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uint64_t Hours = Minutes / 60;
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uint64_t Days = Hours / 24;
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result.Year = 1970;
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while (Days >= 365)
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{
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if (result.Year % 4 == 0 &&
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(result.Year % 100 != 0 ||
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result.Year % 400 == 0))
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{
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if (Days >= 366)
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{
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Days -= 366;
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result.Year++;
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}
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else
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break;
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}
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else
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{
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Days -= 365;
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result.Year++;
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}
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}
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int DaysInMonth[] = {31,
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result.Year % 4 == 0
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? 29
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: 28,
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31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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for (result.Month = 0; result.Month < 12; result.Month++)
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{
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if (Days < s_cst(uint64_t, (DaysInMonth[result.Month])))
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break;
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Days -= DaysInMonth[result.Month];
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}
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result.Month++;
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result.Day = s_cst(int, (Days) + 1);
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result.Hour = s_cst(int, (Hours % 24));
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result.Minute = s_cst(int, (Minutes % 60));
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result.Second = s_cst(int, (Seconds % 60));
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result.Counter = s_cst(uint64_t, (Timestamp));
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return result;
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}
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}
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210
core/time/timer.cpp
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210
core/time/timer.cpp
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@ -0,0 +1,210 @@
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <time.hpp>
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#include <memory.hpp>
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#include <acpi.hpp>
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#include <debug.h>
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#include <io.h>
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#include "../../kernel.h"
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namespace Time
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{
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bool time::Sleep(size_t Duration, Units Unit)
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{
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switch (ActiveTimer)
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{
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case NONE:
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error("No timer is active");
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return false;
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case RTC:
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fixme("RTC sleep not implemented");
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return false;
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case PIT:
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fixme("PIT sleep not implemented");
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return false;
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case HPET:
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return this->hpet->Sleep(Duration, Unit);
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case ACPI:
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fixme("ACPI sleep not implemented");
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return false;
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case APIC:
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fixme("APIC sleep not implemented");
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return false;
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case TSC:
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return this->tsc->Sleep(Duration, Unit);
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default:
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error("Unknown timer");
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return false;
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}
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}
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uint64_t time::GetCounter()
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{
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switch (ActiveTimer)
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{
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case NONE:
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error("No timer is active");
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return 0;
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case RTC:
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fixme("RTC sleep not implemented");
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return 0;
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case PIT:
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fixme("PIT sleep not implemented");
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return 0;
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case HPET:
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return this->hpet->GetCounter();
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case ACPI:
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fixme("ACPI sleep not implemented");
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return 0;
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case APIC:
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fixme("APIC sleep not implemented");
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return 0;
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case TSC:
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return this->tsc->GetCounter();
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default:
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error("Unknown timer");
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return 0;
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}
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}
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uint64_t time::CalculateTarget(uint64_t Target, Units Unit)
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{
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switch (ActiveTimer)
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{
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case NONE:
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error("No timer is active");
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return 0;
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case RTC:
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fixme("RTC sleep not implemented");
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return 0;
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case PIT:
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fixme("PIT sleep not implemented");
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return 0;
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case HPET:
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return this->hpet->CalculateTarget(Target, Unit);
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case ACPI:
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fixme("ACPI sleep not implemented");
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return 0;
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case APIC:
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fixme("APIC sleep not implemented");
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return 0;
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case TSC:
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return this->tsc->CalculateTarget(Target, Unit);
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default:
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error("Unknown timer");
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return 0;
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}
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}
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uint64_t time::GetNanosecondsSinceClassCreation()
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{
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switch (ActiveTimer)
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{
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case NONE:
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error("No timer is active");
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return 0;
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case RTC:
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fixme("RTC sleep not implemented");
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return 0;
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case PIT:
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fixme("PIT sleep not implemented");
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return 0;
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case HPET:
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return this->hpet->GetNanosecondsSinceClassCreation();
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case ACPI:
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fixme("ACPI sleep not implemented");
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return 0;
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case APIC:
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fixme("APIC sleep not implemented");
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return 0;
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case TSC:
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return this->tsc->GetNanosecondsSinceClassCreation();
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default:
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error("Unknown timer");
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return 0;
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}
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}
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void time::FindTimers(void *acpi)
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{
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#if defined(a86)
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/* TODO: RTC check */
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/* TODO: PIT check */
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if (acpi)
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{
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if (((ACPI::ACPI *)acpi)->HPET)
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{
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hpet = new HighPrecisionEventTimer(((ACPI::ACPI *)acpi)->HPET);
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ActiveTimer = HPET;
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SupportedTimers |= HPET;
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KPrint("\e11FF11HPET found");
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}
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else
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{
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KPrint("\eFF2200HPET not found");
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}
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/* TODO: ACPI check */
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/* TODO: APIC check */
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}
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else
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{
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KPrint("\eFF2200ACPI not found");
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}
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bool TSCInvariant = false;
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if (strcmp(CPU::Vendor(), x86_CPUID_VENDOR_AMD) == 0)
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{
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CPU::x86::AMD::CPUID0x80000007 cpuid80000007;
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cpuid80000007.Get();
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if (cpuid80000007.EDX.TscInvariant)
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TSCInvariant = true;
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}
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else if (strcmp(CPU::Vendor(), x86_CPUID_VENDOR_INTEL) == 0)
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{
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// TODO: Intel 0x80000007
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CPU::x86::AMD::CPUID0x80000007 cpuid80000007;
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cpuid80000007.Get();
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if (cpuid80000007.EDX.TscInvariant)
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TSCInvariant = true;
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}
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if (TSCInvariant)
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{
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tsc = new TimeStampCounter;
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// FIXME: ActiveTimer = TSC;
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SupportedTimers |= TSC;
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KPrint("\e11FF11Invariant TSC found");
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}
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else
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KPrint("\eFF2200TSC is not invariant");
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#endif
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}
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time::time()
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{
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}
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time::~time()
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{
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}
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}
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76
core/time/tsc.cpp
Normal file
76
core/time/tsc.cpp
Normal file
@ -0,0 +1,76 @@
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/*
|
||||
This file is part of Fennix Kernel.
|
||||
|
||||
Fennix Kernel is free software: you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License as
|
||||
published by the Free Software Foundation, either version 3 of
|
||||
the License, or (at your option) any later version.
|
||||
|
||||
Fennix Kernel is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <time.hpp>
|
||||
|
||||
#include <memory.hpp>
|
||||
#include <acpi.hpp>
|
||||
#include <debug.h>
|
||||
#include <io.h>
|
||||
|
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#include "../../kernel.h"
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|
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namespace Time
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||||
{
|
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bool TimeStampCounter::Sleep(size_t Duration, Units Unit)
|
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{
|
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#if defined(a86)
|
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uint64_t Target = this->GetCounter() + (Duration * ConvertUnit(Unit)) / this->clk;
|
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while (this->GetCounter() < Target)
|
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CPU::Pause();
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return true;
|
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#endif
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}
|
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|
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uint64_t TimeStampCounter::GetCounter()
|
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{
|
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#if defined(a86)
|
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return CPU::Counter();
|
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#endif
|
||||
}
|
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|
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uint64_t TimeStampCounter::CalculateTarget(uint64_t Target, Units Unit)
|
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{
|
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#if defined(a86)
|
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return uint64_t((this->GetCounter() + (Target * ConvertUnit(Unit))) / this->clk);
|
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#endif
|
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}
|
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|
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uint64_t TimeStampCounter::GetNanosecondsSinceClassCreation()
|
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{
|
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#if defined(a86)
|
||||
return uint64_t((this->GetCounter() - this->ClassCreationTime) / this->clk);
|
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#endif
|
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}
|
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|
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TimeStampCounter::TimeStampCounter()
|
||||
{
|
||||
#if defined(a86)
|
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fixme(""); // FIXME: This is not a good way to measure the clock speed
|
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uint64_t Start = CPU::Counter();
|
||||
TimeManager->Sleep(1, Units::Milliseconds);
|
||||
uint64_t End = CPU::Counter();
|
||||
|
||||
this->clk = End - Start;
|
||||
this->ClassCreationTime = this->GetCounter();
|
||||
#endif
|
||||
}
|
||||
|
||||
TimeStampCounter::~TimeStampCounter()
|
||||
{
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user