pci_host.cc

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/*
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#include "dev/arm/pci_host.hh"
 
#include "params/GenericArmPciHost.hh"
 
namespace gem5
{
 
GenericArmPciHost::GenericArmPciHost(const GenericArmPciHostParams &p)
    : GenericPciHost(p),
      intPolicy(p.int_policy), intBase(p.int_base),
      intCount(p.int_count)
{
}
 
 
uint32_t
GenericArmPciHost::mapPciInterrupt(const PciBusAddr &addr, PciIntPin pin) const
{
    fatal_if(pin == PciIntPin::NO_INT,
             "%02x:%02x.%i: Interrupt from a device without interrupts\n",
             addr.bus, addr.dev, addr.func);
 
    switch (intPolicy) {
      case enums::ARM_PCI_INT_STATIC:
        return GenericPciHost::mapPciInterrupt(addr, pin);
 
      case enums::ARM_PCI_INT_DEV:
        return intBase + (addr.dev % intCount);
 
      case enums::ARM_PCI_INT_PIN:
        return intBase + ((static_cast<uint8_t>(pin) - 1) % intCount);
 
      default:
        fatal("Unsupported PCI interrupt routing policy.");
    }
}
 
} // namespace gem5