pci_host.cc

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/*
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 * Authors: Andreas Sandberg
 */

#include "dev/arm/pci_host.hh"

#include "params/GenericArmPciHost.hh"

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.");
    }
}


GenericArmPciHost *
GenericArmPciHostParams::create()
{
    return new GenericArmPciHost(this);
}