AbstractController.cc revision 10311:ad9c042dce54 
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)
35{
36    m_version = p->version;
37    m_clusterID = p->cluster_id;
38
39    m_transitions_per_cycle = p->transitions_per_cycle;
40    m_buffer_size = p->buffer_size;
41    m_recycle_latency = p->recycle_latency;
42    m_number_of_TBEs = p->number_of_TBEs;
43    m_is_blocking = false;
44
45    if (m_version == 0) {
46        // Combine the statistics from all controllers
47        // of this particular type.
48        Stats::registerDumpCallback(new StatsCallback(this));
49    }
50}
51
52void
53AbstractController::init()
54{
55    params()->ruby_system->registerAbstractController(this);
56    m_delayHistogram.init(10);
57    uint32_t size = Network::getNumberOfVirtualNetworks();
58    for (uint32_t i = 0; i < size; i++) {
59        m_delayVCHistogram.push_back(new Stats::Histogram());
60        m_delayVCHistogram[i]->init(10);
61    }
62}
63
64void
65AbstractController::resetStats()
66{
67    m_delayHistogram.reset();
68    uint32_t size = Network::getNumberOfVirtualNetworks();
69    for (uint32_t i = 0; i < size; i++) {
70        m_delayVCHistogram[i]->reset();
71    }
72}
73
74void
75AbstractController::regStats()
76{
77    m_fully_busy_cycles
78        .name(name() + ".fully_busy_cycles")
79        .desc("cycles for which number of transistions == max transitions")
80        .flags(Stats::nozero);
81}
82
83void
84AbstractController::profileMsgDelay(uint32_t virtualNetwork, Cycles delay)
85{
86    assert(virtualNetwork < m_delayVCHistogram.size());
87    m_delayHistogram.sample(delay);
88    m_delayVCHistogram[virtualNetwork]->sample(delay);
89}
90
91void
92AbstractController::stallBuffer(MessageBuffer* buf, Address addr)
93{
94    if (m_waiting_buffers.count(addr) == 0) {
95        MsgVecType* msgVec = new MsgVecType;
96        msgVec->resize(m_in_ports, NULL);
97        m_waiting_buffers[addr] = msgVec;
98    }
99    (*(m_waiting_buffers[addr]))[m_cur_in_port] = buf;
100}
101
102void
103AbstractController::wakeUpBuffers(Address addr)
104{
105    if (m_waiting_buffers.count(addr) > 0) {
106        //
107        // Wake up all possible lower rank (i.e. lower priority) buffers that could
108        // be waiting on this message.
109        //
110        for (int in_port_rank = m_cur_in_port - 1;
111             in_port_rank >= 0;
112             in_port_rank--) {
113            if ((*(m_waiting_buffers[addr]))[in_port_rank] != NULL) {
114                (*(m_waiting_buffers[addr]))[in_port_rank]->reanalyzeMessages(addr);
115            }
116        }
117        delete m_waiting_buffers[addr];
118        m_waiting_buffers.erase(addr);
119    }
120}
121
122void
123AbstractController::wakeUpAllBuffers(Address addr)
124{
125    if (m_waiting_buffers.count(addr) > 0) {
126        //
127        // Wake up all possible lower rank (i.e. lower priority) buffers that could
128        // be waiting on this message.
129        //
130        for (int in_port_rank = m_in_ports - 1;
131             in_port_rank >= 0;
132             in_port_rank--) {
133            if ((*(m_waiting_buffers[addr]))[in_port_rank] != NULL) {
134                (*(m_waiting_buffers[addr]))[in_port_rank]->reanalyzeMessages(addr);
135            }
136        }
137        delete m_waiting_buffers[addr];
138        m_waiting_buffers.erase(addr);
139    }
140}
141
142void
143AbstractController::wakeUpAllBuffers()
144{
145    //
146    // Wake up all possible buffers that could be waiting on any message.
147    //
148
149    std::vector<MsgVecType*> wokeUpMsgVecs;
150
151    if(m_waiting_buffers.size() > 0) {
152        for (WaitingBufType::iterator buf_iter = m_waiting_buffers.begin();
153             buf_iter != m_waiting_buffers.end();
154             ++buf_iter) {
155             for (MsgVecType::iterator vec_iter = buf_iter->second->begin();
156                  vec_iter != buf_iter->second->end();
157                  ++vec_iter) {
158                  if (*vec_iter != NULL) {
159                      (*vec_iter)->reanalyzeAllMessages();
160                  }
161             }
162             wokeUpMsgVecs.push_back(buf_iter->second);
163        }
164
165        for (std::vector<MsgVecType*>::iterator wb_iter = wokeUpMsgVecs.begin();
166             wb_iter != wokeUpMsgVecs.end();
167             ++wb_iter) {
168             delete (*wb_iter);
169        }
170
171        m_waiting_buffers.clear();
172    }
173}
174
175void
176AbstractController::blockOnQueue(Address addr, MessageBuffer* port)
177{
178    m_is_blocking = true;
179    m_block_map[addr] = port;
180}
181
182void
183AbstractController::unblock(Address addr)
184{
185    m_block_map.erase(addr);
186    if (m_block_map.size() == 0) {
187       m_is_blocking = false;
188    }
189}
190