2011-03-22 03:51:58 +01:00
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/*
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* Copyright (c) 2009 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* Authors: Brad Beckmann
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* Tushar Krishna
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*/
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machine(Directory, "Network_test Directory")
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:
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{
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2011-05-18 09:06:07 +02:00
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MessageBuffer requestToDir, network="From", virtual_network="0", ordered="false", vnet_type = "request";
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MessageBuffer forwardToDir, network="From", virtual_network="1", ordered="false", vnet_type = "forward";
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MessageBuffer responseToDir, network="From", virtual_network="2", ordered="false", vnet_type = "response";
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2011-03-22 03:51:58 +01:00
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// STATES
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state_declaration(State, desc="Directory states", default="Directory_State_I") {
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// Base states
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I, AccessPermission:Invalid, desc="Invalid";
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}
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// Events
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enumeration(Event, desc="Directory events") {
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// processor requests
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Receive_Request, desc="Receive Message";
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Receive_Forward, desc="Receive Message";
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Receive_Response, desc="Receive Message";
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}
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// TYPES
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// DirectoryEntry
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structure(Entry, desc="...") {
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State DirectoryState, desc="Directory state";
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DataBlock DataBlk, desc="data for the block";
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}
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// ** OBJECTS **
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State getState(Address addr) {
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return State:I;
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}
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void setState(Address addr, State state) {
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}
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// ** IN_PORTS **
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in_port(requestQueue_in, RequestMsg, requestToDir) {
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if (requestQueue_in.isReady()) {
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peek(requestQueue_in, RequestMsg) {
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if (in_msg.Type == CoherenceRequestType:MSG) {
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trigger(Event:Receive_Request, in_msg.Address);
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} else {
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error("Invalid message");
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}
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}
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}
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}
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in_port(forwardQueue_in, RequestMsg, forwardToDir) {
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if (forwardQueue_in.isReady()) {
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peek(forwardQueue_in, RequestMsg) {
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if (in_msg.Type == CoherenceRequestType:MSG) {
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trigger(Event:Receive_Forward, in_msg.Address);
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} else {
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error("Invalid message");
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}
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}
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}
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}
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in_port(responseQueue_in, RequestMsg, responseToDir) {
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if (responseQueue_in.isReady()) {
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peek(responseQueue_in, RequestMsg) {
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if (in_msg.Type == CoherenceRequestType:MSG) {
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trigger(Event:Receive_Response, in_msg.Address);
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} else {
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error("Invalid message");
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}
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}
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}
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}
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// Actions
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action(i_popIncomingRequestQueue, "i", desc="Pop incoming request queue") {
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requestQueue_in.dequeue();
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}
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action(f_popIncomingForwardQueue, "f", desc="Pop incoming forward queue") {
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forwardQueue_in.dequeue();
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}
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action(r_popIncomingResponseQueue, "r", desc="Pop incoming response queue") {
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responseQueue_in.dequeue();
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}
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// TRANSITIONS
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// The directory simply drops the received packets.
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// The goal of Network_test is only to track network stats.
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transition(I, Receive_Request) {
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i_popIncomingRequestQueue;
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}
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transition(I, Receive_Forward) {
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f_popIncomingForwardQueue;
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}
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transition(I, Receive_Response) {
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r_popIncomingResponseQueue;
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}
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}
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