1 files changed, 85 insertions, 0 deletions
diff --git a/src/mem/ruby/network/garnet2.0/VirtualChannel.cc b/src/mem/ruby/network/garnet2.0/VirtualChannel.cc
new file mode 100644
index 000000000..55f2a874c
--- /dev/null
+++ b/src/mem/ruby/network/garnet2.0/VirtualChannel.cc
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2008 Princeton University
+ * Copyright (c) 2016 Georgia Institute of Technology
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * 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;
+ * neither the name of the copyright holders 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
+ * OWNER 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: Niket Agarwal
+ *          Tushar Krishna
+ */
+
+
+#include "mem/ruby/network/garnet2.0/VirtualChannel.hh"
+
+VirtualChannel::VirtualChannel(int id)
+    : m_enqueue_time(INFINITE_)
+{
+    m_id = id;
+    m_input_buffer = new flitBuffer();
+    m_vc_state.first = IDLE_;
+    m_vc_state.second = Cycles(0);
+    m_output_vc = -1;
+    m_output_port = -1;
+}
+
+VirtualChannel::~VirtualChannel()
+{
+    delete m_input_buffer;
+}
+
+void
+VirtualChannel::set_idle(Cycles curTime)
+{
+    m_vc_state.first = IDLE_;
+    m_vc_state.second = curTime;
+    m_enqueue_time = Cycles(INFINITE_);
+    m_output_port = -1;
+    m_output_vc = -1;
+}
+
+void
+VirtualChannel::set_active(Cycles curTime)
+{
+    m_vc_state.first = ACTIVE_;
+    m_vc_state.second = curTime;
+    m_enqueue_time = curTime;
+}
+
+bool
+VirtualChannel::need_stage(flit_stage stage, Cycles time)
+{
+    if (m_input_buffer->isReady(time)) {
+        assert(m_vc_state.first == ACTIVE_ && m_vc_state.second <= time);
+        flit *t_flit = m_input_buffer->peekTopFlit();
+        return(t_flit->is_stage(stage, time));
+    }
+    return false;
+}
+
+uint32_t
+VirtualChannel::functionalWrite(Packet *pkt)
+{
+    return m_input_buffer->functionalWrite(pkt);
+}