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/*
* Copyright (c) 2019 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
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Andreas Sandberg
*/
#ifndef __BASE_CHANNEL_ADDR_HH__
#define __BASE_CHANNEL_ADDR_HH__
#include <ostream>
#include "base/addr_range.hh"
/**
* Class holding a guest address in a contiguous channel-local address
* space.
*/
class ChannelAddr
{
public:
using Type = Addr;
/** Explicit constructor assigning a value. */
explicit constexpr ChannelAddr(Type _a) : a(_a) { }
/** Converting back to the value type. */
explicit constexpr operator Type() const { return a; }
/** Converting back to the value type. */
constexpr Type value() const { return a; }
constexpr ChannelAddr() : a(0) { }
ChannelAddr(const AddrRange &range, Addr _a)
: a(range.removeIntlvBits(_a)) {}
ChannelAddr(const ChannelAddr &) = default;
ChannelAddr &operator=(const ChannelAddr &) = default;
Addr getPA(const AddrRange &range) const {
return range.addIntlvBits(a);
}
constexpr ChannelAddr operator|(const Type b) const {
return ChannelAddr(a | b);
}
constexpr ChannelAddr operator&(const Type b) const {
return ChannelAddr(a & b);
}
constexpr ChannelAddr operator>>(const int b) const {
return ChannelAddr(a >> b);
}
constexpr ChannelAddr operator<<(const int b) const {
return ChannelAddr(a << b);
}
constexpr ChannelAddr operator*(const Type &b) const {
return ChannelAddr(a * b);
}
constexpr ChannelAddr operator/(const Type &b) const {
return ChannelAddr(a / b);
}
constexpr ChannelAddr operator+(const Type &b) const {
return ChannelAddr(a + b);
}
constexpr ChannelAddr operator-(const Type &b) const {
return ChannelAddr(a - b);
}
constexpr ChannelAddr operator|(const ChannelAddr &b) const {
return ChannelAddr(a | b.a);
}
constexpr ChannelAddr operator&(const ChannelAddr &b) const {
return ChannelAddr(a & b.a);
}
constexpr ChannelAddr operator^(const ChannelAddr &b) const {
return ChannelAddr(a ^ b.a);
}
constexpr ChannelAddr operator+(const ChannelAddr &b) const {
return ChannelAddr(a + b.a);
}
constexpr ChannelAddr operator-(const ChannelAddr &b) const {
return ChannelAddr(a - b.a);
}
constexpr bool operator>(const ChannelAddr &b) const { return a > b.a; }
constexpr bool operator>=(const ChannelAddr &b) const { return a >= b.a; }
constexpr bool operator<(const ChannelAddr &b) const { return a < b.a; }
constexpr bool operator<=(const ChannelAddr &b) const { return a <= b.a; }
constexpr bool operator==(const ChannelAddr &b) const { return a == b.a; }
constexpr bool operator!=(const ChannelAddr &b) const { return a != b.a; }
private:
/** Member holding the actual value. */
Type a;
};
/**
* The ChanneelAddrRange class describes a contiguous range of
* addresses in a contiguous channel-local address space.
*/
class ChannelAddrRange
{
public:
constexpr ChannelAddrRange()
: ChannelAddrRange(ChannelAddr(1), ChannelAddr(0)) {}
constexpr ChannelAddrRange(ChannelAddr start, ChannelAddr end)
: _start(start), _end(end) {}
ChannelAddrRange(AddrRange ch_range, Addr start, Addr end);
ChannelAddrRange(AddrRange ch_range, AddrRange range);
constexpr ChannelAddrRange(const ChannelAddrRange &) = default;
constexpr ChannelAddr size() const { return _end - _start + 1; }
constexpr bool valid() const { return _start <= _end; }
constexpr ChannelAddr start() const { return _start; }
constexpr ChannelAddr end() const { return _end; }
constexpr bool contains(ChannelAddr a) const {
return a >= _start && a <= _end;
}
protected:
ChannelAddr _start;
ChannelAddr _end;
};
namespace std
{
template<>
struct hash<ChannelAddr>
{
typedef ChannelAddr argument_type;
typedef std::size_t result_type;
result_type
operator()(argument_type const &a) const noexcept {
return std::hash<ChannelAddr::Type>{}(
static_cast<argument_type::Type>(a));
}
};
}
std::ostream &operator<<(std::ostream &out, const ChannelAddr &addr);
#endif // __BASE_CHANNEL_ADDR_HH__
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