/// <summary>
/// Write data to PCI
/// </summary>
/// <param name="bus">Bus</param>
/// <param name="slot">Slot</param>
/// <param name="function">Function</param>
/// <param name="offset">Offset</param>
/// <param name="value">The value to write</param>
/// <param name="size">The size of the data to write</param>
public static void Write(ushort bus, ushort slot, ushort function, ushort offset, uint value, uint size)
{
uint address = generateAddress(bus, slot, function, offset);
PortIO.Out32(CONFIG_ADR, address);
if (size == 4)
{
PortIO.Out32(DATA_ADR, value);
}
else if (size == 2)
{
PortIO.Out16((ushort)(DATA_ADR + (offset & 0x02)), (ushort)value);
}
else if (size == 1)
{
PortIO.Out8((ushort)(DATA_ADR + (offset & 0x03)), (byte)value);
}
}
/// <summary>
/// Read data from PCI
/// </summary>
/// <param name="bus">Bus</param>
/// <param name="slot">Slot</param>
/// <param name="function">Function</param>
/// <param name="offset">Offset</param>
/// <param name="size">The size of the data to read</param>
/// <returns>The read data</returns>
public static uint Read(ushort bus, ushort slot, ushort function, ushort offset, uint size)
{
uint address = generateAddress(bus, slot, function, offset);
PortIO.Out32(CONFIG_ADR, address);
if (size == 4)
{
return(PortIO.In32(DATA_ADR) & 0xFFFFFFFF);
}
else if (size == 2)
{
return((uint)PortIO.In16((ushort)(DATA_ADR + (offset & 0x02))) & 0xFFFF);
}
else if (size == 1)
{
return((uint)PortIO.In8((ushort)(DATA_ADR + (offset & 0x03))) & 0xFF);
}
return(0xFFFFFFFF);
}