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/*
* Copyright (c) 2012-2014, TU Delft
* Copyright (c) 2012-2014, TU Eindhoven
* Copyright (c) 2012-2014, TU Kaiserslautern
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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
* HOLDER 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: Karthik Chandrasekar
*
*/
#include "MemCommand.h"
#include <algorithm> // for max
#include "MemorySpecification.h"
using namespace Data;
using namespace std;
MemCommand::MemCommand(MemCommand::cmds type,
unsigned bank, int64_t timestamp) :
type(type),
bank(bank),
timestamp(timestamp)
{
}
void MemCommand::setType(MemCommand::cmds _type)
{
type = _type;
}
MemCommand::cmds MemCommand::getType() const
{
return type;
}
void MemCommand::setBank(unsigned _bank)
{
bank = _bank;
}
unsigned MemCommand::getBank() const
{
return bank;
}
// For auto-precharge with read or write - to calculate cycle of precharge
int64_t MemCommand::getPrechargeOffset(const MemorySpecification& memSpec,
MemCommand::cmds type) const
{
int64_t precharge_offset = 0;
int64_t BL = memSpec.memArchSpec.burstLength;
int64_t RTP = memSpec.memTimingSpec.RTP;
int64_t dataRate = memSpec.memArchSpec.dataRate;
int64_t AL = memSpec.memTimingSpec.AL;
int64_t WL = memSpec.memTimingSpec.WL;
int64_t WR = memSpec.memTimingSpec.WR;
int64_t B = BL/dataRate;
const MemoryType::MemoryType_t& memType = memSpec.memoryType;
// Read with auto-precharge
if (type == MemCommand::RDA) {
if (memType == MemoryType::DDR2) {
precharge_offset = B + AL - 2 + max(RTP, int64_t(2));
} else if (memType == MemoryType::DDR3) {
precharge_offset = AL + max(RTP, int64_t(4));
} else if (memType == MemoryType::DDR4) {
precharge_offset = AL + RTP;
} else if (memType == MemoryType::LPDDR) {
precharge_offset = B;
} else if (memType == MemoryType::LPDDR2) {
precharge_offset = B + max(int64_t(0), RTP - 2);
} else if (memType == MemoryType::LPDDR3) {
precharge_offset = B + max(int64_t(0), RTP - 4);
} else if (memType == MemoryType::WIDEIO_SDR) {
precharge_offset = B;
}
} else if (type == MemCommand::WRA) { // Write with auto-precharge
if (memType == MemoryType::DDR2) {
precharge_offset = B + WL + WR;
} else if (memType == MemoryType::DDR3) {
precharge_offset = B + WL + WR;
} else if (memType == MemoryType::DDR4) {
precharge_offset = B + WL + WR;
} else if (memType == MemoryType::LPDDR) {
precharge_offset = B + WR; // + DQSS actually, but we don't have that parameter.
} else if (memType == MemoryType::LPDDR2) {
precharge_offset = B + WL + WR + 1;
} else if (memType == MemoryType::LPDDR3) {
precharge_offset = B + WL + WR + 1;
} else if (memType == MemoryType::WIDEIO_SDR) {
precharge_offset = B + WL + WR - 1;
}
}
return precharge_offset;
} // MemCommand::getPrechargeOffset
void MemCommand::setTime(int64_t _timestamp)
{
timestamp = _timestamp;
}
int64_t MemCommand::getTimeInt64() const
{
return timestamp;
}
MemCommand::cmds MemCommand::typeWithoutAutoPrechargeFlag() const
{
if (type == MemCommand::RDA) {
return MemCommand::RD;
} else if (type == MemCommand::WRA) {
return MemCommand::WR;
}
return type;
}
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