internal PCIInterrupt GeneratePCIIRQ(int gsi)
{
lock (pci_ints)
{
if (pci_ints.ContainsKey(gsi))
{
return(pci_ints[gsi]);
}
GlobalSystemInterrupt gsi_obj = GetGSI(gsi);
if (gsi_obj == null)
{
return(null);
}
PCIInterrupt ret = new PCIInterrupt(gsi_obj);
pci_ints[gsi] = ret;
return(ret);
}
}
private ISAInterrupt GenerateISAIRQ(int i)
{
/* Parse interrupt source overrides to find out the gsi of this irq */
int gsi_num = i;
bool is_level_trigger = false;
bool is_low_active = false;
foreach (var iso in isos)
{
if (iso.Bus == 0 && iso.Source == i)
{
gsi_num = (int)iso.GSI;
System.Diagnostics.Debugger.Log(0, "acpipc", "IRQ: " + i.ToString() + " remaps to GSI: " + gsi_num.ToString());
switch ((iso.Flags >> 2) & 0x3)
{
case 0:
is_level_trigger = false;
break;
case 1:
is_level_trigger = false;
break;
case 3:
is_level_trigger = true;
break;
}
switch (iso.Flags & 0x3)
{
case 0:
if (is_level_trigger)
{
is_low_active = true;
}
else
{
is_low_active = false;
}
break;
case 1:
is_low_active = false;
break;
case 3:
is_low_active = true;
break;
}
}
}
GlobalSystemInterrupt gsi = GetGSI(gsi_num);
if (gsi == null)
{
System.Diagnostics.Debugger.Log(0, "acpipc", "GetGSI(" + gsi_num.ToString() + ") returned false");
return(null);
}
ISAInterrupt ret = new ISAInterrupt(gsi);
ret.is_level_trigger = is_level_trigger;
ret.is_low_active = is_low_active;
ret.irq = i;
System.Diagnostics.Debugger.Log(0, "acpipc", "Created ISA Interrupt handler for IRQ " + i.ToString());
return(ret);
}
internal ACPIInterrupt(GlobalSystemInterrupt global_interrupt, bool level_trigger, bool low_active) : base(global_interrupt)
{
gsi = global_interrupt;
is_level_trigger = level_trigger;
is_low_active = low_active;
}
internal ACPIInterrupt(GlobalSystemInterrupt global_interrupt) : base(global_interrupt)
{
gsi = global_interrupt;
}
internal ISAInterrupt(GlobalSystemInterrupt global_interrupt)
: base(global_interrupt, false, false)
{
}
internal PCIInterrupt(GlobalSystemInterrupt global_interrupt)
: base(global_interrupt, true, true)
{
}
