1/*
2 * Copyright (c) 2012-2013, 2017-2018 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed here under. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated

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56
57/**
58 * The linear generator generates sequential requests from a
59 * start to an end address, with a fixed block size. A
60 * fraction of the requests are reads, as determined by the
61 * read percent. There is an optional data limit for when to
62 * stop generating new requests.
63 */
64class LinearGen : public StochasticGen
65{
66
67 public:
68
69 /**
70 * Create a linear address sequence generator. Set
71 * min_period == max_period for a fixed inter-transaction
72 * time.
73 *
74 * @param gen Traffic generator owning this sequence generator
75 * @param _duration duration of this state before transitioning
76 * @param start_addr Start address
77 * @param end_addr End address
78 * @param _blocksize Size used for transactions injected
79 * @param min_period Lower limit of random inter-transaction time
80 * @param max_period Upper limit of random inter-transaction time
81 * @param read_percent Percent of transactions that are reads
82 * @param data_limit Upper limit on how much data to read/write
83 */
84 LinearGen(BaseTrafficGen &gen, Tick _duration,
85 Addr start_addr, Addr end_addr, Addr _blocksize,
86 Tick min_period, Tick max_period,
87 uint8_t read_percent, Addr data_limit)
88 : StochasticGen(gen, _duration, start_addr, end_addr,
89 _blocksize, min_period, max_period, read_percent,
90 data_limit),
91 nextAddr(0),
92 dataManipulated(0)
93 { }
94
95 void enter();
96
97 PacketPtr getNextPacket();
98
99 Tick nextPacketTick(bool elastic, Tick delay) const;
100
101 private:
102 /** Address of next request */
103 Addr nextAddr;
104
105 /**
106 * Counter to determine the amount of data
107 * manipulated. Used to determine if we should continue
108 * generating requests.
109 */
110 Addr dataManipulated;
111};
112
113#endif