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acastong |
//RequestPacket.cpp
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is HyperTransport Tunnel IP Core.
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*
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* The Initial Developer of the Original Code is
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* Ecole Polytechnique de Montreal.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ami Castonguay <acastong@grm.polymtl.ca>
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*
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* Alternatively, the contents of this file may be used under the terms
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* of the Polytechnique HyperTransport Tunnel IP Core Source Code License
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* (the "PHTICSCL License", see the file PHTICSCL.txt), in which case the
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* provisions of PHTICSCL License are applicable instead of those
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* above. If you wish to allow use of your version of this file only
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* under the terms of the PHTICSCL License and not to allow others to use
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* your version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice and
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* other provisions required by the PHTICSCL License. If you do not delete
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* the provisions above, a recipient may use your version of this file
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* under either the MPL or the PHTICSCL License."
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*
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* ***** END LICENSE BLOCK ***** */
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#include "RequestPacket.h"
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RequestPacket:: RequestPacket(const sc_bv<6> &command,
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const sc_bv<4> &seqID,
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const sc_bv<5> &unitID,
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const bool passPW,
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const bool isocOrCompat,
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const sc_bv<5> srcTag,
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const sc_bv<4> count,
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const sc_bv<38> address)
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{
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bv.range(5,0) = command;
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bv.range(7,6) = seqID.range(3,2);
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bv.range(14,13) = seqID.range(1,0);
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bv.range(12,8) = unitID;
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bv[15] = passPW;
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bv[21] = isocOrCompat;
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bv.range(20,16) = srcTag;
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bv.range(25,22) = count;
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bv.range(63,26) = address;
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}
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//If the packet is a packet that only contains 32 bits
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bool RequestPacket::isDwordPacket() const{
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sc_bv<6> cmd = bv(5 , 0);
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if(cmd == "111100" || cmd == "111111" || cmd == "000010"){
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return true;
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}
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return false;
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}
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//If the packet has a data packet associated to it
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bool RequestPacket::hasDataAssociated() const{
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if(bv(5 , 0) == "111101" ||
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bv(5 , 3) == "101" || bv(5 , 3) == "001")
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{
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return true;
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}
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return false;
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}
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//To get the virtual channel of the packet
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VirtualChannel RequestPacket::getVirtualChannel() const{
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if(bv[5] == '1' && bv.range(4,0) != "11101") return VC_POSTED;
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return VC_NON_POSTED;
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}
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bool RequestPacket::isInAddressRange(const char * low, const char * high) const{
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//Start by converting the strings to uint
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sc_uint<40> low_uint(low);
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sc_uint<40> high_uint(high);
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//Call the function taking uints
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return isInAddressRange(low_uint,high_uint);
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}
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bool RequestPacket::isInAddressRange(const sc_bv<40> &low, const sc_bv<40> &high) const{
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//Start by converting the strings to uint
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sc_uint<40> low_uint(low);
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sc_uint<40> high_uint(high);
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//Call the function taking uints
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return isInAddressRange(low_uint,high_uint);
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}
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bool RequestPacket::isInAddressRange(const sc_uint<40> &low,
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const sc_uint<40> &high) const{
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if(isDwordPacket()) return false;
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sc_uint<40> addr = getRequestAddr();
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return (addr >= low && addr < high);
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}
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sc_uint<40> RequestPacket::getRequestAddr() const{
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sc_uint<40> addr;
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//If the packet only has 32 bits, return an address
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//of only zeros since it does not have any address
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if(isDwordPacket())
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return addr;
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//Copy the standard range of addresses
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sc_bv<37> temp(bv.range(63,27));
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addr.range(39,3) = temp;
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//Copy the last bit of the address. An exception is made for
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//the ATOMIC packet, that has this bit always at 0
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sc_bit temp2(bv[26]);
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if(bv(5 , 0) != "111101") addr.bit(2) = temp2;
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//Return the address
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return addr;
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}
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sc_uint<4> RequestPacket::getDataLengthm1() const {
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//If a byte read (cmd starts by 01 for read, and pkt[2] for byte
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if(bv[5] == false && bv[4] == true && bv[2] == true){
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return 0;
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}
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else{
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//DataLength is Doubleword
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return (sc_bv<4>)bv.range(25,22);;
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}
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}
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sc_bv<4> RequestPacket::getSeqID() const{
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sc_bv<4> temp;
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temp.range(3,2) = bv(7,6);
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temp.range(1,0) = bv(14,13);
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return temp;
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}
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bool RequestPacket::getPassPW() const{
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return (sc_bit)bv[15];
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}
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sc_bv<5> RequestPacket::getUnitID() const{
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return bv.range(12,8);
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}
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sc_bv<5> RequestPacket::getSrcTag() const{
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return bv.range(20,16);
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}
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bool RequestPacket::getCompatOrIsoc() const{
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return (sc_bit)bv[21];
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}
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bool RequestPacket::isChain() const{
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//if(posted && write && bit chain)
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if(bv.range(5 , 3) == "101" &&
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bv[19] == true) return true;
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return false;
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}
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