From 16fa8d7cc8c92f5ab879e4cf9c6c0bbb3567860f Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Thu, 24 May 2018 01:37:55 -0700
Subject: systemc: Import tests from the Accellera systemc distribution.

Change-Id: Iad76b398949a55d768a34d027a2d8e3739953da6
Reviewed-on: https://gem5-review.googlesource.com/10845
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
---
 .../tests/tlm/multi_sockets/simpleAddressMap.h     | 148 +++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 src/systemc/tests/tlm/multi_sockets/simpleAddressMap.h

(limited to 'src/systemc/tests/tlm/multi_sockets/simpleAddressMap.h')

diff --git a/src/systemc/tests/tlm/multi_sockets/simpleAddressMap.h b/src/systemc/tests/tlm/multi_sockets/simpleAddressMap.h
new file mode 100644
index 000000000..87ef7851e
--- /dev/null
+++ b/src/systemc/tests/tlm/multi_sockets/simpleAddressMap.h
@@ -0,0 +1,148 @@
+/*****************************************************************************
+
+  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 __simpleAddressMap_h__
+#define __simpleAddressMap_h__
+
+#include <systemc>
+#include <map>
+
+
+//--------------------------------------------------------------------------
+/**
+ * Simple address map implementation for the generic protocol.
+ */
+//--------------------------------------------------------------------------
+class SimpleAddressMap
+{
+  typedef std::map<sc_dt::uint64, unsigned int> mapType;
+  typedef std::map<sc_dt::uint64, unsigned int>::iterator addressMapIterator;
+
+public:
+  SimpleAddressMap() {}
+
+  //--------------------------------------------------------------------------
+  /**
+   * Check for overlapping address ranges
+   */
+  //--------------------------------------------------------------------------
+  void checkSanity()
+  {
+    addressMapIterator pos;
+    for (pos=m_addressMap.begin();pos!=m_addressMap.end();++pos){
+      if(pos->second!=255)
+        SC_REPORT_ERROR("SimpleAddressMap","Overlapping Address Regions.");
+      else
+        ++pos;
+      if(pos->second==255)
+        SC_REPORT_ERROR("SimpleAddressMap","Overlapping Address Regions.");
+    }
+    std::cout<<"Address check successful."<<std::endl;
+  }
+
+
+  //--------------------------------------------------------------------------
+  /**
+   * Print map
+   */
+  //--------------------------------------------------------------------------
+  void dumpMap()
+  {
+    std::cout<<"SimpleAddressMap: printing the sorted MAP:"<<std::endl;
+    addressMapIterator pos;
+    for (pos=m_addressMap.begin();pos!=m_addressMap.end();++pos){
+      if(pos->second==255)
+        printf("key: %x    value: %i \n", (unsigned int) ((pos->first+1)>>1)-1, pos->second);
+      else
+        printf("key: %x    value: %i \n", (unsigned int) (pos->first>>1)-1, pos->second);
+    }
+  }
+
+
+  //--------------------------------------------------------------------------
+  /**
+   * Decode slave address.
+   * @param address_ A slave address.
+   * @return The decoded slave port number. On error, the value 255 is returned.
+   */
+  //--------------------------------------------------------------------------
+  unsigned int decode(sc_dt::uint64 address_)
+  {
+    addressMapIterator lbound;
+
+    lbound=m_addressMap.lower_bound((address_+1)<<1);
+    if((lbound->second == 255) | (lbound==m_addressMap.end())){
+      SC_REPORT_ERROR("SimpleAddressMap", "Address does not match any registered address range.");
+    }
+    else{
+      return lbound->second;
+    }
+    return 255;
+  }
+
+  const sc_dt::uint64& get_max(){
+    if (m_addressMap.size()){
+      addressMapIterator i=(m_addressMap.end());
+      i--;
+      retval=(i->first>>1)-1;
+      return retval;
+    }
+    else {
+      SC_REPORT_ERROR("SimpleAddressMap", "get_max() called on empty address map.");
+      return retval;
+    }
+  }
+
+  const sc_dt::uint64& get_min(){
+    if (m_addressMap.size()){
+      addressMapIterator i=(m_addressMap.begin());
+      retval=((i->first+1)>>1)-1;
+      return retval;
+    }
+    else {
+      SC_REPORT_ERROR("SimpleAddressMap", "get_min() called on empty address map.");
+      return retval;
+    }
+  }
+
+  //--------------------------------------------------------------------------
+  /**
+   * Insert a slave into the address map
+   */
+  //--------------------------------------------------------------------------
+  void insert(sc_dt::uint64 baseAddress_, sc_dt::uint64 highAddress_, unsigned int portNumber_)
+  {
+    if(baseAddress_>highAddress_)
+      SC_REPORT_ERROR("SimpleAddressMap", "Base address must be lower than high address.");
+    if(portNumber_>=255)
+      SC_REPORT_ERROR("SimpleAddressMap", "Only ;-) 255 targets can be handled.");
+    m_addressMap.insert(mapType::value_type(((baseAddress_+1)<<1)-1,    255    ));
+    m_addressMap.insert(mapType::value_type( (highAddress_+1)<<1   ,portNumber_));
+  }
+
+private:
+  sc_dt::uint64 retval;
+  /// the address map
+  mapType m_addressMap;
+};
+
+
+
+
+#endif
-- 
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