host.hh

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/*
 * Copyright (c) 2015 ARM Limited
 * All rights reserved
 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
 * unmodified and in its entirety in all distributions of the software,
 * modified or unmodified, in source code or in binary form.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
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#ifndef __DEV_PCI_HOST_HH__
#define __DEV_PCI_HOST_HH__
 
#include "base/addr_range.hh"
#include "dev/pci/types.hh"
#include "dev/pci/upstream.hh"
#include "params/PciHost.hh"
 
namespace gem5
{
 
struct GenericPciHostParams;
 
class Platform;

class PciHost : public PciUpstream
{
  public:
    PciHost(const PciHostParams &p);
    virtual ~PciHost();
};

class GenericPciHost : public PciHost
{
  public:
    GenericPciHost(const GenericPciHostParams &p);
    virtual ~GenericPciHost();
 
    AddrRange getConfigAddrRange() const override;
 
  protected: // PciUpstream
    AddrRange interfaceConfigRange(const PciDevAddr &dev_addr) const override;
 
    Addr
    interfacePioAddr(const PciDevAddr &dev_addr, Addr pci_addr) const override
    {
        return pciPioBase + pci_addr;
    }
 
    Addr
    interfaceMemAddr(const PciDevAddr &dev_addr, Addr pci_addr) const override
    {
        return pciMemBase + pci_addr;
    }
 
    Addr
    interfaceDmaAddr(const PciDevAddr &dev_addr, Addr pci_addr) const override
    {
        return pciDmaBase + pci_addr;
    }
 
    PciBusNum
    getBusNum() const override
    {
        return 0;
    }
 
  protected: // Interrupt handling
    void interfacePostInt(const PciDevAddr &addr, PciIntPin pin) override;
    void interfaceClearInt(const PciDevAddr &addr, PciIntPin pin) override;
 
    virtual uint32_t mapPciInterrupt(const PciDevAddr &dev_addr,
                                     PciIntPin pin) const;
 
  protected:
    Platform &platform;
 
    const Addr confBase;
    const Addr confSize;
    const uint8_t confDeviceBits;
 
    const Addr pciPioBase;
    const Addr pciMemBase;
    const Addr pciDmaBase;
};
 
} // namespace gem5
 
#endif // __DEV_PCI_HOST_HH__