/// <summary>
/// Power shutdown
/// </summary>
public static void Shutdown()
{
Acpica.AcpiEnterSleepStatePrep(5);
CPU.CLI();
Acpica.AcpiEnterSleepState(5);
CPU.HLT();
}
/// <summary>
/// Sets the IRQ routing
/// </summary>
private static void setIRQRouting()
{
m_irqTable = new PciIRQEntry[PCI_BUS_DEV_MAX * PCI_PINS];
// Find root PCI device and handle it
int status = Acpica.AcpiGetDevices("PNP0A03", onRootDevice, null, null);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[PCI] Couldn't get root device");
}
}
/// <summary>
/// Called as callback when a root device is found
/// </summary>
/// <param name="Object">The object</param>
/// <param name="NestingLevel">Nesting level</param>
/// <param name="Context">User context</param>
/// <param name="ReturnValue">Return value if early returned</param>
/// <returns>Status</returns>
private static int onRootDevice(void *Object, uint NestingLevel, void *Context, void **ReturnValue)
{
// Get routing table
AcpiObjects.Buffer buffer;
buffer.Length = Acpica.ACPI_ALLOCATE_BUFFER;
int status = Acpica.AcpiGetIrqRoutingTable(Object, &buffer);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[PCI] Couldn't get ACPI IRQ Routing Table");
}
// The last entry will have Length 0
Acpica.PCIRoutingTable *table = (Acpica.PCIRoutingTable *)buffer.Pointer;
while (table->Length > 0)
{
// No reference source
if (table->Source[0] == 0)
{
uint slot = (uint)(table->Address >> 16);
addIRQ(slot, table->Pin, table->SourceIndex, 0, 0);
}
// Source is not null, that means we need to lookup the reference resource
else
{
void *handle = null;
status = Acpica.AcpiGetHandle(Object, Util.CharPtrToString(table->Source), &handle);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[PCI] Couldn't load references handle");
}
status = Acpica.AcpiWalkResources(handle, Acpica.METHOD_NAME__CRS, onIRQResource, table);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[PCI] Couldn't process resources for IRQ");
}
}
// Next entry
table = (Acpica.PCIRoutingTable *)((byte *)table + table->Length);
}
// The object returned should be freed by us
Acpica.AcpiOsFree(buffer.Pointer);
return(Acpica.AE_OK);
}
/// <summary>
/// Power reset
/// </summary>
public static void Reboot()
{
Acpica.AcpiReset();
}
/// <summary>
/// Initializes ACPI
/// </summary>
public static void Init()
{
int status = Acpica.AcpiInitializeSubsystem();
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't initialize ACPICA subsystem");
}
status = Acpica.AcpiInitializeTables(null, 16, false);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't initialize tables");
}
status = Acpica.AcpiInstallAddressSpaceHandler((void *)Acpica.ACPI_ROOT_OBJECT, Acpica.ACPI_ADR_SPACE_SYSTEM_MEMORY, (void *)Acpica.ACPI_DEFAULT_HANDLER, null, null);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Could not install address space handler for system memory");
}
status = Acpica.AcpiInstallAddressSpaceHandler((void *)Acpica.ACPI_ROOT_OBJECT, Acpica.ACPI_ADR_SPACE_SYSTEM_IO, (void *)Acpica.ACPI_DEFAULT_HANDLER, null, null);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Could not install address space handler for system IO");
}
status = Acpica.AcpiInstallAddressSpaceHandler((void *)Acpica.ACPI_ROOT_OBJECT, Acpica.ACPI_ADR_SPACE_PCI_CONFIG, (void *)Acpica.ACPI_DEFAULT_HANDLER, null, null);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Could not install address space handler for PCI");
}
status = Acpica.AcpiLoadTables();
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't load tables");
}
status = Acpica.AcpiEnableSubsystem(Acpica.ACPI_FULL_INITIALIZATION);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't enable subsystems:");
}
status = Acpica.AcpiInitializeObjects(Acpica.ACPI_FULL_INITIALIZATION);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't initialize objects");
}
// MADT table contains info about APIC, processors, ...
Acpica.TableHeader *table;
status = Acpica.AcpiGetTable("APIC", 1, &table);
if (status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't find MADT table");
}
parseMADT((MADT *)table);
// Set ACPI to APIC using the "_PIC" method, note that this method is not always present
// so we "can" ignore the AE_NOT_FOUND error
AcpiObjects.IntegerObject arg1;
arg1.Type = AcpiObjects.ObjectType.Integer;
arg1.Value = 1;
AcpiObjects.ObjectList args;
args.Count = 1;
args.Pointer = &arg1;
status = Acpica.AcpiEvaluateObject((void *)Acpica.ACPI_ROOT_OBJECT, "_PIC", &args, null);
if (status != Acpica.AE_NOT_FOUND && status != Acpica.AE_OK)
{
Panic.DoPanic("[ACPI] Couldn't call _PIC method");
}
// We are done here
Console.WriteLine("[ACPI] Initialized");
}