/// <summary>
/// Sets an interrupt handler for a PCI device
/// </summary>
/// <param name="dev">The device</param>
public static void SetInterruptHandler(PciDevice dev, IRQ.IRQHandler handler)
{
// Get IRQ routing data from table
PciIRQEntry irq = m_irqTable[(dev.Slot * PCI_PINS) + (dev.IRQPin - 1)];
uint irqNum = irq.Irq;
// If no routing exists, use the interrupt line
if (irqNum == 0)
{
irqNum = dev.IRQLine;
}
// First set the IRQ handler to avoid race conditions
IRQ.SetHandler(irqNum, handler);
IOApicManager.CreateEntry(irqNum, irqNum, irq.Flags);
// Info
Console.Write("[PCI] Set device to use IRQ ");
Console.WriteNum((int)irqNum);
Console.Write('\n');
}
/// <summary>
/// Checks a device
/// </summary>
/// <param name="bus">The bus</param>
/// <param name="device">The device</param>
/// <param name="function">The function</param>
private static void checkDevice(byte bus, byte device, byte function)
{
ushort vendorID = GetVendorID(bus, device, function);
if (vendorID == 0xFFFF)
{
return;
}
ushort deviceID = GetDeviceID(bus, device, function);
if (deviceID == 0xFFFF)
{
return;
}
PciDevice dev = new PciDevice();
dev.Device = deviceID;
dev.Function = function;
dev.Bus = bus;
dev.Slot = device;
dev.Vendor = vendorID;
dev.BAR0 = GetBar(bus, device, function, BAR0);
dev.BAR1 = GetBar(bus, device, function, BAR1);
dev.BAR2 = GetBar(bus, device, function, BAR2);
dev.BAR3 = GetBar(bus, device, function, BAR3);
dev.BAR4 = GetBar(bus, device, function, BAR4);
dev.BAR5 = GetBar(bus, device, function, BAR5);
dev.Type = (byte)Read(bus, device, function, CONFIG_HEADER_TYPE, 1);
dev.ClassCode = (byte)Read(bus, device, function, CONFIG_CLASS_CODE, 1);
dev.SubClass = (byte)Read(bus, device, function, CONFIG_SUB_CLASS, 1);
dev.ProgIntf = (byte)Read(bus, device, function, CONFIG_PROG_INTF, 1);
dev.CombinedClass = dev.ClassCode << 8 | dev.SubClass;
dev.IRQPin = (byte)Read(bus, device, function, IRQPIN, 1);
dev.IRQLine = (byte)Read(bus, device, function, IRQLINE, 1);
Devices[m_currentdevice++] = dev;
}
/// <summary>
/// Write data to PCI
/// </summary>
/// <param name="dev">The PCI device</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(PciDevice dev, ushort offset, uint value, uint size)
{
Write(dev.Bus, dev.Slot, dev.Function, offset, value, size);
}
/// <summary>
/// Read data from PCI
/// </summary>
/// <param name="dev">The device</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(PciDevice dev, ushort offset, uint size)
{
return(Read(dev.Bus, dev.Slot, dev.Function, offset, size));
}