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Add TSC timer stub

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This commit is contained in:
Alex
2023-04-23 06:29:31 +03:00
parent dc6fd148fc
commit a73a49094c
5 changed files with 251 additions and 35 deletions
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89
Core/Time/Timer.cpp
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@ -45,7 +45,7 @@ namespace Time
fixme("PIT sleep not implemented");
return false;
case HPET:
return hpet->Sleep(Duration, Unit);
return this->hpet->Sleep(Duration, Unit);
case ACPI:
fixme("ACPI sleep not implemented");
return false;
@ -53,8 +53,7 @@ namespace Time
fixme("APIC sleep not implemented");
return false;
case TSC:
fixme("TSC sleep not implemented");
return false;
return this->tsc->Sleep(Duration, Unit);
default:
error("Unknown timer");
return false;
@ -75,7 +74,7 @@ namespace Time
fixme("PIT sleep not implemented");
return false;
case HPET:
return hpet->GetCounter();
return this->hpet->GetCounter();
case ACPI:
fixme("ACPI sleep not implemented");
return false;
@ -83,8 +82,7 @@ namespace Time
fixme("APIC sleep not implemented");
return false;
case TSC:
fixme("TSC sleep not implemented");
return false;
return this->tsc->GetCounter();
default:
error("Unknown timer");
return false;
@ -105,7 +103,7 @@ namespace Time
fixme("PIT sleep not implemented");
return false;
case HPET:
return hpet->CalculateTarget(Target, Unit);
return this->hpet->CalculateTarget(Target, Unit);
case ACPI:
fixme("ACPI sleep not implemented");
return false;
@ -113,15 +111,43 @@ namespace Time
fixme("APIC sleep not implemented");
return false;
case TSC:
fixme("TSC sleep not implemented");
return false;
return this->tsc->CalculateTarget(Target, Unit);
default:
error("Unknown timer");
return false;
}
}
time::time(void *acpi)
uint64_t time::GetMillisecondsSinceClassCreation()
{
switch (ActiveTimer)
{
case NONE:
error("No timer is active");
return false;
case RTC:
fixme("RTC sleep not implemented");
return false;
case PIT:
fixme("PIT sleep not implemented");
return false;
case HPET:
return this->hpet->GetMillisecondsSinceClassCreation();
case ACPI:
fixme("ACPI sleep not implemented");
return false;
case APIC:
fixme("APIC sleep not implemented");
return false;
case TSC:
return this->tsc->GetMillisecondsSinceClassCreation();
default:
error("Unknown timer");
return false;
}
}
void time::FindTimers(void *acpi)
{
/* TODO: RTC check */
/* TODO: PIT check */
@ -132,17 +158,56 @@ namespace Time
{
hpet = new HighPrecisionEventTimer(((ACPI::ACPI *)acpi)->HPET);
ActiveTimer = HPET;
SupportedTimers |= HPET;
KPrint("\e11FF11HPET found");
}
else
{
KPrint("\eFF2200HPET not found");
}
/* TODO: ACPI check */
/* TODO: APIC check */
}
else
{
KPrint("\eFF2200ACPI not found");
}
/* TODO: TSC check */
bool TSCInvariant = false;
if (strcmp(CPU::Vendor(), x86_CPUID_VENDOR_AMD) == 0)
{
CPU::x86::AMD::CPUID0x80000007 cpuid80000007;
cpuid80000007.Get();
if (cpuid80000007.EDX.TscInvariant)
TSCInvariant = true;
}
else if (strcmp(CPU::Vendor(), x86_CPUID_VENDOR_INTEL) == 0)
{
// TODO: Intel 0x80000007
CPU::x86::AMD::CPUID0x80000007 cpuid80000007;
cpuid80000007.Get();
if (cpuid80000007.EDX.TscInvariant)
TSCInvariant = true;
}
if (TSCInvariant)
{
tsc = new TimeStampCounter;
// FIXME: ActiveTimer = TSC;
SupportedTimers |= TSC;
KPrint("\e11FF11Invariant TSC found");
}
else
KPrint("\eFF2200TSC is not invariant");
}
time::time()
{
}
time::~time()
{
debug("Destructor called");
}
}