From 7364acfc758a30f81aa75844f6b96b1e4e19990a Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Sat, 8 Dec 2018 01:58:26 -0800
Subject: systemc: Initial import of TLM headers from Accellera.

These headers will need to be cleaned up and have some Accellera
specific quirks ironed out of them, but I'll do that in a later change
to make it clear what those changes are.

Change-Id: Ia4e08633ab552b4c616c66c9b7e2bbd78ebfe7b9
Reviewed-on: https://gem5-review.googlesource.com/c/15055
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Anthony Gutierrez <anthony.gutierrez@amd.com>
---
 .../tlm_channels/tlm_fifo/tlm_fifo_put_get.h       | 140 +++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_put_get.h

(limited to 'src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_put_get.h')

diff --git a/src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_put_get.h b/src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_put_get.h
new file mode 100644
index 000000000..2728e0394
--- /dev/null
+++ b/src/systemc/ext/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_put_get.h
@@ -0,0 +1,140 @@
+/*****************************************************************************
+
+  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+  more contributor license agreements.  See the NOTICE file distributed
+  with this work for additional information regarding copyright ownership.
+  Accellera licenses this file to you under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with the
+  License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+  implied.  See the License for the specific language governing
+  permissions and limitations under the License.
+
+ *****************************************************************************/
+
+#ifndef __TLM_FIFO_PUT_GET_IF_H__
+#define __TLM_FIFO_PUT_GET_IF_H__
+
+namespace tlm {
+
+/******************************************************************
+//
+// get interface
+//
+******************************************************************/
+
+template <typename T>
+inline
+T
+tlm_fifo<T>::get( tlm_tag<T> * )
+{
+
+  while( is_empty() ) {
+    wait( m_data_written_event );
+  }
+
+  m_num_read ++;
+  request_update();
+
+  return buffer.read();
+
+}
+
+// non-blocking read
+
+template <typename T>
+inline
+bool
+tlm_fifo<T>::nb_get( T& val_ )
+{
+
+  if( is_empty() ) {
+    return false;
+  }
+
+  m_num_read ++;
+  request_update();
+
+  val_ = buffer.read();
+
+  return true;
+
+}
+
+template <typename T>
+inline
+bool
+tlm_fifo<T>::nb_can_get( tlm_tag<T> * ) const {
+
+  return !is_empty();
+
+}
+
+
+/******************************************************************
+//
+// put interface
+//
+******************************************************************/
+
+template <typename T>
+inline
+void
+tlm_fifo<T>::put( const T& val_ )
+{
+    while( is_full() ) {
+  wait( m_data_read_event );
+    }
+
+    if( buffer.is_full() ) {
+
+      buffer.resize( buffer.size() * 2 );
+
+    }
+
+    m_num_written ++;
+    buffer.write( val_ );
+
+    request_update();
+}
+
+template <typename T>
+inline
+bool
+tlm_fifo<T>::nb_put( const T& val_ )
+{
+
+  if( is_full() ) {
+    return false;
+  }
+
+  if( buffer.is_full() ) {
+
+    buffer.resize( buffer.size() * 2 );
+
+  }
+
+  m_num_written ++;
+  buffer.write( val_ );
+  request_update();
+
+  return true;
+}
+
+template < typename T >
+inline
+bool
+tlm_fifo<T>::nb_can_put( tlm_tag<T> * ) const {
+
+  return !is_full();
+
+}
+
+} // namespace tlm
+
+#endif
-- 
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