AbstractController.cc revision 9996:150338b8ba12 
1/*
2 * Copyright (c) 2011 Mark D. Hill and David A. Wood
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "mem/ruby/slicc_interface/AbstractController.hh"
30#include "mem/ruby/system/Sequencer.hh"
31#include "mem/ruby/system/System.hh"
32
33AbstractController::AbstractController(const Params *p)
34    : ClockedObject(p), Consumer(this), m_fully_busy_cycles(0),
35    m_request_count(0)
36{
37    m_version = p->version;
38    m_transitions_per_cycle = p->transitions_per_cycle;
39    m_buffer_size = p->buffer_size;
40    m_recycle_latency = p->recycle_latency;
41    m_number_of_TBEs = p->number_of_TBEs;
42    m_is_blocking = false;
43
44    if (m_version == 0) {
45        // Combine the statistics from all controllers
46        // of this particular type.
47        Stats::registerDumpCallback(new StatsCallback(this));
48    }
49}
50
51void
52AbstractController::init()
53{
54    params()->ruby_system->registerAbstractController(this);
55}
56
57void
58AbstractController::clearStats()
59{
60    m_requestProfileMap.clear();
61    m_request_count = 0;
62
63    m_delayHistogram.clear();
64
65    uint32_t size = Network::getNumberOfVirtualNetworks();
66    m_delayVCHistogram.resize(size);
67    for (uint32_t i = 0; i < size; i++) {
68        m_delayVCHistogram[i].clear();
69    }
70
71    Sequencer *seq = getSequencer();
72    if (seq != NULL) {
73        seq->clearStats();
74    }
75}
76
77void
78AbstractController::profileRequest(const std::string &request)
79{
80    m_request_count++;
81
82    // if it doesn't exist, conveniently, it will be created with the
83    // default value which is 0
84    m_requestProfileMap[request]++;
85}
86
87void
88AbstractController::profileMsgDelay(uint32_t virtualNetwork, Cycles delay)
89{
90    assert(virtualNetwork < m_delayVCHistogram.size());
91    m_delayHistogram.add(delay);
92    m_delayVCHistogram[virtualNetwork].add(delay);
93}
94
95void
96AbstractController::connectWithPeer(AbstractController *c)
97{
98    getQueuesFromPeer(c);
99    c->getQueuesFromPeer(this);
100}
101
102void
103AbstractController::stallBuffer(MessageBuffer* buf, Address addr)
104{
105    if (m_waiting_buffers.count(addr) == 0) {
106        MsgVecType* msgVec = new MsgVecType;
107        msgVec->resize(m_in_ports, NULL);
108        m_waiting_buffers[addr] = msgVec;
109    }
110    (*(m_waiting_buffers[addr]))[m_cur_in_port] = buf;
111}
112
113void
114AbstractController::wakeUpBuffers(Address addr)
115{
116    if (m_waiting_buffers.count(addr) > 0) {
117        //
118        // Wake up all possible lower rank (i.e. lower priority) buffers that could
119        // be waiting on this message.
120        //
121        for (int in_port_rank = m_cur_in_port - 1;
122             in_port_rank >= 0;
123             in_port_rank--) {
124            if ((*(m_waiting_buffers[addr]))[in_port_rank] != NULL) {
125                (*(m_waiting_buffers[addr]))[in_port_rank]->reanalyzeMessages(addr);
126            }
127        }
128        delete m_waiting_buffers[addr];
129        m_waiting_buffers.erase(addr);
130    }
131}
132
133void
134AbstractController::wakeUpAllBuffers(Address addr)
135{
136    if (m_waiting_buffers.count(addr) > 0) {
137        //
138        // Wake up all possible lower rank (i.e. lower priority) buffers that could
139        // be waiting on this message.
140        //
141        for (int in_port_rank = m_in_ports - 1;
142             in_port_rank >= 0;
143             in_port_rank--) {
144            if ((*(m_waiting_buffers[addr]))[in_port_rank] != NULL) {
145                (*(m_waiting_buffers[addr]))[in_port_rank]->reanalyzeMessages(addr);
146            }
147        }
148        delete m_waiting_buffers[addr];
149        m_waiting_buffers.erase(addr);
150    }
151}
152
153void
154AbstractController::wakeUpAllBuffers()
155{
156    //
157    // Wake up all possible buffers that could be waiting on any message.
158    //
159
160    std::vector<MsgVecType*> wokeUpMsgVecs;
161
162    if(m_waiting_buffers.size() > 0) {
163        for (WaitingBufType::iterator buf_iter = m_waiting_buffers.begin();
164             buf_iter != m_waiting_buffers.end();
165             ++buf_iter) {
166             for (MsgVecType::iterator vec_iter = buf_iter->second->begin();
167                  vec_iter != buf_iter->second->end();
168                  ++vec_iter) {
169                  if (*vec_iter != NULL) {
170                      (*vec_iter)->reanalyzeAllMessages();
171                  }
172             }
173             wokeUpMsgVecs.push_back(buf_iter->second);
174        }
175
176        for (std::vector<MsgVecType*>::iterator wb_iter = wokeUpMsgVecs.begin();
177             wb_iter != wokeUpMsgVecs.end();
178             ++wb_iter) {
179             delete (*wb_iter);
180        }
181
182        m_waiting_buffers.clear();
183    }
184}
185
186void
187AbstractController::blockOnQueue(Address addr, MessageBuffer* port)
188{
189    m_is_blocking = true;
190    m_block_map[addr] = port;
191}
192
193void
194AbstractController::unblock(Address addr)
195{
196    m_block_map.erase(addr);
197    if (m_block_map.size() == 0) {
198       m_is_blocking = false;
199    }
200}
201