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Alex
2022-10-10 23:31:46 +03:00
parent 4b6683823f
commit 32a17c5e63
20 changed files with 21 additions and 21 deletions
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225
Architecture/amd64/DifferentiatedSystemDescriptionTable.cpp Normal file
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#include "acpi.hpp"
#include <time.hpp>
#include <debug.h>
#include <io.h>
// #include "../timer.h"
// #include "apic.hpp"
// #include "smp.hpp"
#define ACPI_TIMER 0x0001
#define ACPI_BUSMASTER 0x0010
#define ACPI_GLOBAL 0x0020
#define ACPI_POWER_BUTTON 0x0100
#define ACPI_SLEEP_BUTTON 0x0200
#define ACPI_RTC_ALARM 0x0400
#define ACPI_PCIE_WAKE 0x4000
#define ACPI_WAKE 0x8000
namespace ACPI
{
__attribute__((always_inline)) inline bool IsCanonical(uint64_t Address)
{
return ((Address <= 0x00007FFFFFFFFFFF) || ((Address >= 0xFFFF800000000000) && (Address <= 0xFFFFFFFFFFFFFFFF)));
}
#define ACPI_ENABLED 0x0001
#define ACPI_SLEEP 0x2000
#define ACPI_GAS_MMIO 0
#define ACPI_GAS_IO 1
#define ACPI_GAS_PCI 2
void DSDT::SCIHandler(CPU::x64::TrapFrame *regs)
{
debug("SCI Handle Triggered");
uint16_t event = this->GetSCIevent();
debug("SCI Event: %#llx", event);
if (event & ACPI_TIMER)
event &= ~ACPI_TIMER; // Remove the ACPI timer flag.
switch (event)
{
case ACPI_POWER_BUTTON:
{
this->Shutdown();
Time tm = ReadClock();
while (tm.Second == ReadClock().Second)
;
outw(0xB004, 0x2000);
outw(0x604, 0x2000);
outw(0x4004, 0x3400);
CPU::Stop();
break;
}
default:
{
warn("unknown event 0x%04p", event);
return;
}
}
UNUSED(regs);
}
void DSDT::Shutdown()
{
trace("Shutting down...");
if (!ACPIShutdownSupported)
{
outl(0xB004, 0x2000); // for qemu
outl(0x604, 0x2000); // if qemu not working, bochs and older versions of qemu
outl(0x4004, 0x3400); // virtual box
}
else if (SCI_EN == 1)
{
outw(acpi->FADT->PM1aControlBlock, (inw(acpi->FADT->PM1aControlBlock) & 0xE3FF) | ((SLP_TYPa << 10) | ACPI_SLEEP));
if (acpi->FADT->PM1bControlBlock)
outw(acpi->FADT->PM1bControlBlock, (inw(acpi->FADT->PM1bControlBlock) & 0xE3FF) | ((SLP_TYPb << 10) | ACPI_SLEEP));
outw(PM1a_CNT, SLP_TYPa | SLP_EN);
if (PM1b_CNT)
outw(PM1b_CNT, SLP_TYPb | SLP_EN);
}
CPU::Stop();
}
void DSDT::Reboot()
{
trace("Rebooting...");
if (!ACPIShutdownSupported)
{
uint8_t val = 0x02;
while (val & 0x02)
val = inb(0x64);
outb(0x64, 0xFE);
warn("Executing the second attempt to reboot...");
// second attempt to reboot
// https://wiki.osdev.org/Reboot
uint8_t temp;
asm volatile("cli");
do
{
temp = inb(0x64);
if (((temp) & (1 << (0))) != 0)
inb(0x60);
} while (((temp) & (1 << (1))) != 0);
outb(0x64, 0xFE);
CPU::Stop();
}
switch (acpi->FADT->ResetReg.AddressSpace)
{
case ACPI_GAS_MMIO:
*(uint8_t *)(acpi->FADT->ResetReg.Address) = acpi->FADT->ResetValue;
break;
case ACPI_GAS_IO:
outb(acpi->FADT->ResetReg.Address, acpi->FADT->ResetValue);
break;
case ACPI_GAS_PCI:
fixme("ACPI_GAS_PCI not supported.");
/*
seg - 0
bus - 0
dev - (FADT->ResetReg.Address >> 32) & 0xFFFF
function - (FADT->ResetReg.Address >> 16) & 0xFFFF
offset - FADT->ResetReg.Address & 0xFFFF
value - FADT->ResetValue
*/
break;
}
CPU::Stop();
}
uint16_t DSDT::GetSCIevent()
{
uint16_t a = 0, b = 0;
if (acpi->FADT->PM1aEventBlock)
{
a = inw(acpi->FADT->PM1aEventBlock);
outw(acpi->FADT->PM1aEventBlock, a);
}
if (acpi->FADT->PM1bEventBlock)
{
b = inw(acpi->FADT->PM1bEventBlock);
outw(acpi->FADT->PM1bEventBlock, b);
}
return a | b;
}
void DSDT::SetSCIevent(uint16_t value)
{
uint16_t a = acpi->FADT->PM1aEventBlock + (acpi->FADT->PM1EventLength / 2);
uint16_t b = acpi->FADT->PM1bEventBlock + (acpi->FADT->PM1EventLength / 2);
if (acpi->FADT->PM1aEventBlock)
outw(a, value);
if (acpi->FADT->PM1bEventBlock)
outw(b, value);
}
void DSDT::RegisterSCIEvents()
{
this->SetSCIevent(ACPI_POWER_BUTTON | ACPI_SLEEP_BUTTON | ACPI_WAKE);
GetSCIevent();
}
void DSDT::InitSCI()
{
// this should be done for all CPUs
if (ACPIShutdownSupported)
{
debug("Registering SCI Handler to vector IRQ%d", acpi->FADT->SCI_Interrupt);
this->RegisterSCIEvents();
// RegisterInterrupt(this->SCIHandler, acpi->FADT->SCI_Interrupt + CPU::x64::IRQ0, true, true);
}
}
DSDT::DSDT(ACPI *acpi)
{
uint64_t Address = ((IsCanonical(acpi->FADT->X_Dsdt) && acpi->XSDTSupported) ? acpi->FADT->X_Dsdt : acpi->FADT->Dsdt);
uint8_t *S5Address = (uint8_t *)(Address) + 36;
ACPI::ACPI::ACPIHeader *Header = (ACPI::ACPI::ACPIHeader *)Address;
uint64_t Length = Header->Length;
Address *= 2;
while (Length-- > 0)
{
if (!memcmp(S5Address, "_S5_", 4))
break;
S5Address++;
}
if (Length <= 0)
{
warn("_S5 not present in ACPI");
return;
}
if ((*(S5Address - 1) == 0x08 || (*(S5Address - 2) == 0x08 && *(S5Address - 1) == '\\')) && *(S5Address + 4) == 0x12)
{
S5Address += 5;
S5Address += ((*S5Address & 0xC0) >> 6) + 2;
if (*S5Address == 0x0A)
S5Address++;
SLP_TYPa = *(S5Address) << 10;
S5Address++;
if (*S5Address == 0x0A)
S5Address++;
SLP_TYPb = *(S5Address) << 10;
SMI_CMD = acpi->FADT->SMI_CommandPort;
ACPI_ENABLE = acpi->FADT->AcpiEnable;
ACPI_DISABLE = acpi->FADT->AcpiDisable;
PM1a_CNT = acpi->FADT->PM1aControlBlock;
PM1b_CNT = acpi->FADT->PM1bControlBlock;
PM1_CNT_LEN = acpi->FADT->PM1ControlLength;
SLP_EN = 1 << 13;
SCI_EN = 1;
trace("ACPI Shutdown is supported");
ACPIShutdownSupported = true;
return;
}
warn("Failed to parse _S5 in ACPI");
SCI_EN = 0;
}
DSDT::~DSDT()
{
}
}