xref: /gem5/src/dev/pci/types.hh

/*
 * 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
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 *
 * Authors: Andreas Sandberg
 */

#ifndef __DEV_PCI_TYPES_HH__
#define __DEV_PCI_TYPES_HH__

struct PciBusAddr
{
  public:
    PciBusAddr() = delete;

    constexpr PciBusAddr(uint8_t _bus, uint8_t _dev, uint8_t _func)
        : bus(_bus), dev(_dev), func(_func) {}

    constexpr bool operator<(const PciBusAddr &rhs) const {
        return sortValue() < rhs.sortValue();
    }

    uint8_t bus;
    uint8_t dev;
    uint8_t func;

  protected:
    constexpr uint32_t sortValue() const {
        return (bus << 16) | (dev << 8) | func;
    }
};

enum class PciIntPin : uint8_t
{
    NO_INT=0,
    INTA,
    INTB,
    INTC,
    INTD
};

#endif // __DEV_PCI_TYPES_HH__