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acastong |
//link_tx_validator.h
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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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#ifndef LINK_TX_VALIDATOR_H
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#define LINK_TX_VALIDATOR_H
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#include <queue>
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#include "../../../rtl/systemc/core_synth/synth_datatypes.h"
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#include "../../../rtl/systemc/core_synth/constants.h"
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///Verfies what is sent by TX part of the link to check it is correct
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class link_tx_validator : public sc_module{
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public:
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///struct regrouping dword and CTL values to send on link
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struct LinkTransmission_TX{
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sc_bv<32> dword;
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bool lctl;
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bool hctl;
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};
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///Possible values of the state of the link for the testbenches
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enum LinkTBState {
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LinkTBState_INACTIVE,///<Warm reset signaling
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LinkTBState_CTL_ACTIVE,///<CTL has been activated
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LinkTBState_SYNC,///<CTL returns to 0
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LinkTBState_PRERUN,///<Last dword of init before starting normal operation
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LinkTBState_RUN///<Normal operation of the link
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};
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///Main clock of the system
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sc_in<bool > clk;
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///CTL sent by the link
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sc_in<sc_bv<CAD_OUT_DEPTH> > lk_ctl_phy;
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///CAD sent by the link
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sc_in<sc_bv<CAD_OUT_DEPTH> > lk_cad_phy[CAD_OUT_WIDTH];
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///If we consume the CTL and CAD signals
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sc_out<bool> phy_consume_lk;
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///If the data to frame sent to the TX is consumed
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sc_in<bool> tx_consume_data;
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///Data to frame and to sent on the link
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sc_out<sc_bv<32> > cad_to_frame;
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///LCTL to grame and send on the link
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sc_out<bool> lctl_to_frame;
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///HCTL to grame and send on the link
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sc_out<bool > hctl_to_frame;
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///Current state of the link
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LinkTBState state;
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///Counter to keep track of how many cycles is spent in each init state
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int counter;
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///The width of the link
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int bit_width;
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///What we are expected to received from the TX
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std::queue< LinkTransmission_TX > expected_transmission;
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///Next transmissions that we want to pass to the TX
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std::queue< LinkTransmission_TX > to_transmit;
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///Framed version of what is sent on the link
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/** When data is sent on the link, it is sent in a serialized
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way. If the link width is smaller than the physical width,
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then it might take multiple cycles to deserialize a full dword.
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Intermediate result is stored in this variable. New data is
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shifter from the left into the vector as it arrives.
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*/
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sc_bv<32> cad_output;
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///Framed version of the CTL that is sent on the link See ::cad_output
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sc_bv<16> ctl_output;
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///If the TX part of the link is expected to consume data
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int expect_tx_consume_data;
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///If we are checking for invalid behavious and warning when it happens
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bool checking_errors;
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///SystemC Macro
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SC_HAS_PROCESS(link_tx_validator);
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///Constructor
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link_tx_validator(sc_module_name name);
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///Generates data that the TX link can send
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void send_data();
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///Verifies that the output of the TX link is correct
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void validate_outputs();
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///Sets internal state of this class to an initial value
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void reset();
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};
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#endif
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