1/*
2 * Copyright (c) 2012-2014, TU Delft
3 * Copyright (c) 2012-2014, TU Eindhoven
4 * Copyright (c) 2012-2014, TU Kaiserslautern
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are

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53class CommandAnalysis {
54 public:
55 // Power-Down and Self-refresh related memory states
56 enum memstate {
57 MS_PDN_F_ACT = 10, MS_PDN_S_ACT = 11, MS_PDN_F_PRE = 12,
58 MS_PDN_S_PRE = 13, MS_SREF = 14
59 };
60
61 // Returns number of reads, writes, acts, pres and refs in the trace
62 CommandAnalysis(const int64_t nbrofBanks);
63
64 // Number of activate commands
65 int64_t numberofacts;
66 // Number of precharge commands
67 int64_t numberofpres;
68 // Number of reads commands
69 int64_t numberofreads;
70 // Number of writes commands

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110 int64_t sref_ref_act_cycles;
111 // Number of precharged auto-refresh cycles in self-refresh mode
112 int64_t sref_ref_pre_cycles;
113 // Number of active auto-refresh cycles during self-refresh exit
114 int64_t spup_ref_act_cycles;
115 // Number of precharged auto-refresh cycles during self-refresh exit
116 int64_t spup_ref_pre_cycles;
117
118 // function for clearing counters
119 void clearStats(const int64_t timestamp);
120
121 // function for clearing arrays
122 void clear();
123
124 // To identify auto-precharges
125 void getCommands(const MemorySpecification& memSpec,
126 std::vector<MemCommand>& list,
127 bool lastupdate);
128
129 private:
130 int64_t zero;
131 // Cached last read command from the file
132 std::vector<MemCommand> cached_cmd;
133
134 // Stores the memory commands for analysis
135 std::vector<MemCommand> cmd_list;
136
137 // To save states of the different banks, before entering active
138 // power-down mode (slow/fast-exit).
139 std::vector<int> last_states;
140 // Bank state vector
141 std::vector<int> bankstate;
142
143 std::vector<int64_t> activation_cycle;
144 // To keep track of the last ACT cycle

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160 // Clock cycle when self-refresh was issued
161 int64_t sref_cycle;
162
163 // Clock cycle when the latest power-down was issued
164 int64_t pdn_cycle;
165
166 // Memory State
167 unsigned mem_state;
168 unsigned num_active_banks;
169
170 // Clock cycle of first activate command when memory state changes to ACT
171 int64_t first_act_cycle;
172
173 // Clock cycle of last precharge command when memory state changes to PRE
174 int64_t last_pre_cycle;
175
176 // To perform timing analysis of a given set of commands and update command counters
177 void evaluate(const MemorySpecification& memSpec,
178 std::vector<MemCommand>& cmd_list);
179
180 // To calculate time of completion of any issued command
181 int64_t timeToCompletion(const MemorySpecification& memSpec,
182 MemCommand::cmds type);
183
184 // To update idle period information whenever active cycles may be idle
185 void idle_act_update(const MemorySpecification& memSpec,
186 int64_t latest_read_cycle,
187 int64_t latest_write_cycle,
188 int64_t latest_act_cycle,
189 int64_t timestamp);
190
191 // To update idle period information whenever precharged cycles may be idle
192 void idle_pre_update(const MemorySpecification& memSpec,
193 int64_t timestamp,
194 int64_t latest_pre_cycle);
195
196 void printWarningIfActive(const std::string& warning, int type, int64_t timestamp, int bank);
197 void printWarningIfNotActive(const std::string& warning, int type, int64_t timestamp, int bank);
198 void printWarningIfPoweredDown(const std::string& warning, int type, int64_t timestamp, int bank);
199 void printWarning(const std::string& warning, int type, int64_t timestamp, int bank);
200};
201}
202#endif // ifndef COMMAND_TIMINGS_H