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1 /*
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2 * Copyright 2011 OpenSourceStewardshipFoundation.org
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3 * Licensed under GNU General Public License version 2
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4 *
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5 * Author: seanhalle@yahoo.com
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6 *
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7 */
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8 #include "HWSim__PingPong__HWDef/HWSim__PingPong__HWDef.h"
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9
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10 /*'' is an expr resolves to an actual commPath struct instance
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11 */
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12 #define setCommPathValuesTo( commPath, fromElIdx, outPort, toElIdx, inPort,\
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13 timeFnPtr, dataPtr)\
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14 do{\
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15 commPath->idxOfFromElem = fromElIdx; \
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16 commPath->idxOfFromOutPort = fromElIdx; \
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17 commPath->idxOfToElem = toElIdx; \
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18 commPath->idxOfToInPort = inPort; \
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19 commPath->commTimeCalcFn = timeFnPtr;\
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20 commPath->archSpecCommPathData = dataPtr; \
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21 }while(0); //macro magic for namespace
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22
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23
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24 HWSimActivityType* createPingPongActivityType ();
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25
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26 HWSimElem* createAPingPongElem (HWSimNetlist *netlist);
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27
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28 /*This file constructs the netlist for the Hello World circuit, which is
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29 * used during design and implementation of the HWSim language
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30 *
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31 *It has two elements, each with one input port and one output port, and
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32 * a single activity-type.
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33 *
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34 *The elements are cross-coupled, so output port of one connects to input
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35 * port of the other. The input port has a single trigger, which fires
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36 * the one activity-type.
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37 *
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38 *The activity does nothing, except send a NULL message on the output port.
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39 *The activity-sim-time and communication-sim-time are both constants.
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40 *
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41 *Note that elements are generic. They are specialized by declaring
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42 * inports and outports, and by registering triggers that fire particular
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43 * activity-types.
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44 */
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45 HWSimNetlist *createPingPongNetlist()
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46 { HWSimNetlist *netlist;
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47 HWSimCommPath **commPaths;
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48 HWSimElem **elems;
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49 int32 numElems;
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50 int32 numCommPaths;
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51
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52 netlist = malloc( sizeof(HWSimNetlist) );
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53 numElems= 2;
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54 elems = malloc( numElems * sizeof(HWSimElem) );
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55 netlist->numElems = numElems;
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56 netlist->elems = elems;
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57 netlist->numActivityTypes = 1;
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58 netlist->activityTypes = malloc(netlist->numActivityTypes*sizeof(HWSimActivityType*));
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59 netlist->activityTypes[PING_PONG_TYPE] = createPingPongActivityType();
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60 elems[0] = createAPingPongElem( netlist ); //use info from netlist
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61 elems[1] = createAPingPongElem( netlist );
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62 //on one of the elems, make reset trigger an action
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63 elems[1]->inPorts[-1].triggeredActivityType =
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64 netlist->activityTypes[PING_PONG_TYPE]; //Connect elems together
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65
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66 /*OutPorts and InPorts may have many commPaths attached.
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67 * but an inPort only
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68 * has one kind of activity that all incoming communications trigger. That
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69 * activity can be zero time and then switch on the type of message then
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70 * end with a continuation, where the continuation activity is chosen by the
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71 * switch.
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72 *So, a commPath only connects an out port to an in port
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73 *The format is: sending TL-index, out-port, dest TL-index, in-port
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74 */
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75 numCommPaths = 2;
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76 commPaths = malloc( numCommPaths * sizeof(HWSimCommPath) );
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77 netlist->numCommPaths= numCommPaths;
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78 netlist->commPaths= commPaths;
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79 //TL 0, out-port 0 to TL 1, in-port 0
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80 setCommPathValuesTo(commPaths[0],0,0,1,0, commPath_TimeSpanCalc, NULL);
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81 //TL 1, out-port 0 to TL 0, in-port 0
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82 setCommPathValuesTo(commPaths[1], 1,0,0,0, commPath_TimeSpanCalc, NULL);
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83
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84 //TODO: decide how do in-out bidirectional commPaths -- thinking make it two
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85 // separate commPaths with guard between in-port and out-port
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86
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87 return netlist;
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88 }
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89
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90 //Stefan: copy netlist struct with VMS malloc after VMS initialized?
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91 //Sean: yes, otherwise the user has to deal with VMS details.
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92 // So we should do this in HWSim__make_netlist_simulatable ?
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93 // If so, I can do this
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94 HWSimElem *
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95 createAPingPongElem( HWSimNetlist *netlist )
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96 { HWSimElem *TL;
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97 TL = malloc( sizeof(HWSimElem) );
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98 TL->numInPorts = 1;
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99 TL->numOutPorts = 1;
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100 TL->inPorts = HWSim_ext__make_inPortsArray( TL->numInPorts );
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101 TL->inPorts[-1].triggeredActivityType = IDLE_SPAN; //reset port
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102 TL->inPorts[0].triggeredActivityType = netlist->activityTypes[PING_PONG_TYPE];
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103 return TL;
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104 }
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105
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106 HWSimActivityType *
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107 createPingPongActivityType( )
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108 { HWSimActivityType *pingPongActivityType;
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109 pingPongActivityType = malloc( sizeof(HWSimActivityType) );
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110 pingPongActivityType->behaviorFn = &pingPongElem_PingActivity_behavior;
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111 pingPongActivityType->timingFn = &pingPongElem_PingActivity_timing;
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112 return pingPongActivityType;
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113 }
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114
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