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[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [src/] [TapActionReset.cpp] - Rev 206
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// ---------------------------------------------------------------------------- // TAP reset action : implementation // Copyright (C) 2009 Embecosm Limited <info@embecosm.com> // Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> // This file is part of the Embecosm cycle accurate SystemC JTAG library. // This program is free software: you can redistribute it and/or modify it // under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or (at your // option) any later version. // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public // License for more details. // You should have received a copy of the GNU Lesser General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. // The C/C++ parts of this program are commented throughout in a fashion // suitable for processing with Doxygen. // ---------------------------------------------------------------------------- // $Id$ #include "TapActionReset.h" //! Constructor //! Records the SystemC completion event with the parent. Sets the ::firstTime //! flag, so the ::process () method will mark the tapStateMachine as not //! reset. //! @param[in] _doneEvent The SystemC completion event TapActionReset::TapActionReset (sc_core::sc_event *_doneEvent) : TapAction (_doneEvent), firstTime (true) { } // TapActionReset () //! Process the reset action //! This reuses the parent class ::checkResetDone() method. The first time we //! are called, we mark the state machine as being in an inconsistent state, //! to force the reset. //! We use the value of the TAP state machine's resetDone flag to trigger //! completion, since this is set on the final reset cycle. The result from //! ::checkResetDone () is only true on the first cycle AFTER reset. //! @see TapAction:: //! @param[in] tapStateMachine The TAP state machine with which this action //! is associated. //! @param[out] tdi The value to drive on TDI //! @param[in] tdo The value currently on TDO //! @param[out] tms The value to drive on TMS //! @return True if the action is complete bool TapActionReset::process (TapStateMachine *tapStateMachine, bool &tdi, bool tdo, bool &tms) { if (firstTime) { tapStateMachine->setResetDone (false); firstTime = false; } // Parent does the work (no warning message). Our result draws on the value // set in the tapStateMachine, to avoid an extra cycle. checkResetDone (tapStateMachine, tms, false); return tapStateMachine->getResetDone (); } // process ()
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