1/*
2 * Copyright (c) 2012-2014, TU Delft
3 * Copyright (c) 2012-2014, TU Eindhoven
4 * Copyright (c) 2012-2014, TU Kaiserslautern
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * 3. Neither the name of the copyright holder nor the names of its
19 * contributors may be used to endorse or promote products derived from
20 * this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
28 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * Authors: Karthik Chandrasekar
35 *
36 */
37
38#include "MemCommand.h"
39
40#include <algorithm>  // for max
41
42#include "MemorySpecification.h"
43
44using namespace Data;
45using namespace std;
46
47
48MemCommand::MemCommand(MemCommand::cmds type,
49                       unsigned bank, int64_t timestamp) :
50  type(type),
51  bank(bank),
52  timestamp(timestamp)
53{
54}
55
56void MemCommand::setType(MemCommand::cmds _type)
57{
58  type = _type;
59}
60
61MemCommand::cmds MemCommand::getType() const
62{
63  return type;
64}
65
66void MemCommand::setBank(unsigned _bank)
67{
68  bank = _bank;
69}
70
71unsigned MemCommand::getBank() const
72{
73  return bank;
74}
75
76// For auto-precharge with read or write - to calculate cycle of precharge
77int64_t MemCommand::getPrechargeOffset(const MemorySpecification& memSpec,
78                                   MemCommand::cmds           type) const
79{
80  int64_t precharge_offset = 0;
81
82  int64_t BL = memSpec.memArchSpec.burstLength;
83  int64_t RTP = memSpec.memTimingSpec.RTP;
84  int64_t dataRate = memSpec.memArchSpec.dataRate;
85  int64_t AL = memSpec.memTimingSpec.AL;
86  int64_t WL = memSpec.memTimingSpec.WL;
87  int64_t WR = memSpec.memTimingSpec.WR;
88  int64_t B = BL/dataRate;
89
90  const MemoryType::MemoryType_t& memType = memSpec.memoryType;
91
92  // Read with auto-precharge
93  if (type == MemCommand::RDA) {
94    if (memType == MemoryType::DDR2) {
95      precharge_offset = B + AL - 2 + max(RTP, int64_t(2));
96    } else if (memType == MemoryType::DDR3) {
97      precharge_offset = AL + max(RTP, int64_t(4));
98    } else if (memType == MemoryType::DDR4) {
99      precharge_offset = AL + RTP;
100    } else if (memType == MemoryType::LPDDR) {
101      precharge_offset = B;
102    } else if (memType == MemoryType::LPDDR2) {
103      precharge_offset = B + max(int64_t(0), RTP - 2);
104    } else if (memType == MemoryType::LPDDR3) {
105      precharge_offset = B + max(int64_t(0), RTP - 4);
106    } else if (memType == MemoryType::WIDEIO_SDR) {
107      precharge_offset = B;
108    }
109  } else if (type == MemCommand::WRA) { // Write with auto-precharge
110    if (memType == MemoryType::DDR2) {
111      precharge_offset = B + WL + WR;
112    } else if (memType == MemoryType::DDR3) {
113      precharge_offset = B + WL + WR;
114    } else if (memType == MemoryType::DDR4) {
115      precharge_offset = B + WL + WR;
116    } else if (memType == MemoryType::LPDDR) {
117      precharge_offset = B + WR;  // + DQSS actually, but we don't have that parameter.
118    } else if (memType == MemoryType::LPDDR2) {
119      precharge_offset = B +  WL + WR + 1;
120    } else if (memType == MemoryType::LPDDR3) {
121      precharge_offset = B +  WL + WR + 1;
122    } else if (memType == MemoryType::WIDEIO_SDR) {
123      precharge_offset = B + WL + WR - 1;
124    }
125  }
126
127  return precharge_offset;
128} // MemCommand::getPrechargeOffset
129
130void MemCommand::setTime(int64_t _timestamp)
131{
132  timestamp = _timestamp;
133}
134
135int64_t MemCommand::getTimeInt64() const
136{
137  return timestamp;
138}
139
140MemCommand::cmds MemCommand::typeWithoutAutoPrechargeFlag() const
141{
142  if (type == MemCommand::RDA) {
143    return MemCommand::RD;
144  } else if (type == MemCommand::WRA) {
145    return MemCommand::WR;
146  }
147  return type;
148}
149