public static SupportState GetEhciState()
{
var device = new PciDevice(_access, 0, 20, 0);
Supported.TryGetValue(device.DeviceId, out var ehci);
var firstEhci = new PciDevice(_access, 0, 29, 0);
if (firstEhci.DeviceId != ehci.Primary)
{
return(SupportState.WarnPrimaryEhciInactive);
}
var secondEhci = new PciDevice(_access, 0, 26, 0);
if (secondEhci.DeviceId != ehci.Secondary)
{
return(SupportState.WarnSecondaryEhciInactive);
}
return(SupportState.Supported);
}
private bool Check()
{
for (byte i = 0; i < 32; i++)
{
var device = new PciDevice(this, 0, i, 0);
var cls = device.Class;
if (cls != PciClass.BridgeHost && cls != PciClass.DisplayVga)
{
continue;
}
var vendor = device.Vendor;
if (vendor != PciVendor.Intel && vendor != PciVendor.Compaq)
{
continue;
}
return(true);
}
return(false);
}
public static uint GetRouting()
{
var device = new PciDevice(_access, 0, 20, 0);
return(device.ReadUInt32(0xD0));
}
public static void SwitchTo20()
{
var device = new PciDevice(_access, 0, 20, 0);
device.Write(0xD0, (uint)0);
}
public static void SetRouting(uint value)
{
var device = new PciDevice(_access, 0, 20, 0);
device.Write(0xD0, value);
}
public void Write(PciDevice device, ushort offset, uint value)
{
var ptr = PrepareAccess(device, offset);
DirectIo.Write(value, ptr);
}
public byte ReadByte(PciDevice device, ushort offset)
{
var ptr = PrepareAccess(device, offset);
return(DirectIo.ReadByte(ptr));
}
public ushort ReadUint16(PciDevice device, ushort offset)
{
var ptr = PrepareAccess(device, offset);
return(DirectIo.ReadUInt16(ptr));
}
