DirectoryMemory.cc revision 6161 
1
2/*
3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/*
31 * DirectoryMemory.C
32 *
33 * Description: See DirectoryMemory.h
34 *
35 * $Id$
36 *
37 */
38
39#include "mem/ruby/system/System.hh"
40#include "mem/ruby/common/Driver.hh"
41#include "mem/ruby/system/DirectoryMemory.hh"
42#include "mem/ruby/slicc_interface/RubySlicc_Util.hh"
43#include "mem/ruby/config/RubyConfig.hh"
44#include "mem/protocol/Chip.hh"
45
46DirectoryMemory::DirectoryMemory(Chip* chip_ptr, int version)
47{
48  m_chip_ptr = chip_ptr;
49  m_version = version;
50  // THIS DOESN'T SEEM TO WORK -- MRM
51  // m_size = RubyConfig::memoryModuleBlocks()/RubyConfig::numberOfDirectory();
52  m_size = RubyConfig::memoryModuleBlocks();
53  assert(m_size > 0);
54  /*********************************************************************
55  // allocates an array of directory entry pointers & sets them to NULL
56  m_entries = new Directory_Entry*[m_size];
57  if (m_entries == NULL) {
58    ERROR_MSG("Directory Memory: unable to allocate memory.");
59  }
60
61  for (int i=0; i < m_size; i++) {
62    m_entries[i] = NULL;
63  }
64  */////////////////////////////////////////////////////////////////////
65}
66
67DirectoryMemory::~DirectoryMemory()
68{
69  /*********************************************************************
70  // free up all the directory entries
71  for (int i=0; i < m_size; i++) {
72    if (m_entries[i] != NULL) {
73      delete m_entries[i];
74      m_entries[i] = NULL;
75    }
76  }
77
78  // free up the array of directory entries
79  delete[] m_entries;
80  *//////////////////////////////////////////////////////////////////////
81  m_entries.clear();
82}
83
84// Static method
85void DirectoryMemory::printConfig(ostream& out)
86{
87  out << "Memory config:" << endl;
88  out << "  memory_bits: " << RubyConfig::memorySizeBits() << endl;
89  out << "  memory_size_bytes: " << RubyConfig::memorySizeBytes() << endl;
90  out << "  memory_size_Kbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<10) << endl;
91  out << "  memory_size_Mbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<20) << endl;
92  out << "  memory_size_Gbytes: " << double(RubyConfig::memorySizeBytes()) / (1<<30) << endl;
93
94  out << "  module_bits: " << RubyConfig::memoryModuleBits() << endl;
95  out << "  module_size_lines: " << RubyConfig::memoryModuleBlocks() << endl;
96  out << "  module_size_bytes: " << RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes() << endl;
97  out << "  module_size_Kbytes: " << double(RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes()) / (1<<10) << endl;
98  out << "  module_size_Mbytes: " << double(RubyConfig::memoryModuleBlocks() * RubyConfig::dataBlockBytes()) / (1<<20) << endl;
99}
100
101// Public method
102bool DirectoryMemory::isPresent(PhysAddress address)
103{
104  return (map_Address_to_DirectoryNode(address) == m_chip_ptr->getID()*RubyConfig::numberOfDirectoryPerChip()+m_version);
105}
106
107void DirectoryMemory::readPhysMem(uint64 address, int size, void * data)
108{
109}
110
111Directory_Entry& DirectoryMemory::lookup(PhysAddress address)
112{
113  assert(isPresent(address));
114  Index index = address.memoryModuleIndex();
115
116  if (index < 0 || index > m_size) {
117    WARN_EXPR(m_chip_ptr->getID());
118    WARN_EXPR(address.getAddress());
119    WARN_EXPR(index);
120    WARN_EXPR(m_size);
121    ERROR_MSG("Directory Memory Assertion: accessing memory out of range.");
122  }
123
124  map<Index, Directory_Entry*>::iterator iter =  m_entries.find(index);
125  Directory_Entry* entry = m_entries.find(index)->second;
126
127  // allocate the directory entry on demand.
128  if (iter == m_entries.end()) {
129    entry = new Directory_Entry;
130
131    //    entry->getProcOwner() = m_chip_ptr->getID(); // FIXME - This should not be hard coded
132    //    entry->getDirOwner() = true;        // FIXME - This should not be hard-coded
133
134    // load the data from physicalMemory when first initalizing
135    physical_address_t physAddr = address.getAddress();
136    int8 * dataArray = (int8 * )malloc(RubyConfig::dataBlockBytes() * sizeof(int8));
137    readPhysMem(physAddr, RubyConfig::dataBlockBytes(), dataArray);
138
139    for(int j=0; j < RubyConfig::dataBlockBytes(); j++) {
140      entry->getDataBlk().setByte(j, dataArray[j]);
141    }
142    DEBUG_EXPR(NODE_COMP, MedPrio,entry->getDataBlk());
143    // store entry to the table
144    m_entries.insert(make_pair(index, entry));
145  }
146  return (*entry);
147}
148
149/*
150void DirectoryMemory::invalidateBlock(PhysAddress address)
151{
152  assert(isPresent(address));
153
154  Index index = address.memoryModuleIndex();
155
156  if (index < 0 || index > m_size) {
157    ERROR_MSG("Directory Memory Assertion: accessing memory out of range.");
158  }
159
160  if(m_entries[index] != NULL){
161    delete m_entries[index];
162    m_entries[index] = NULL;
163  }
164
165}
166*/
167
168void DirectoryMemory::print(ostream& out) const
169{
170  out << "Directory dump: " << endl;
171  for(map<Index, Directory_Entry*>::const_iterator it = m_entries.begin(); it != m_entries.end(); ++it) {
172      out << it->first << ": ";
173      out << *(it->second) << endl;
174  }
175}
176
177