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Diffstat (limited to 'src/mem/ruby/network/fault_model/FaultModel.hh')
| -rw-r--r-- | src/mem/ruby/network/fault_model/FaultModel.hh | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/mem/ruby/network/fault_model/FaultModel.hh b/src/mem/ruby/network/fault_model/FaultModel.hh new file mode 100644 index 000000000..12a3f3844 --- /dev/null +++ b/src/mem/ruby/network/fault_model/FaultModel.hh @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2011 Massachusetts Institute of Technology + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Konstantinos Aisopos + */ + +/* + * Official Tool Website: www.mit.edu/~kaisopos/FaultModel + * + * If you use our tool for academic research, we request that you cite: + * Konstantinos Aisopos, Chia-Hsin Owen Chen, and Li-Shiuan Peh. Enabling + * System-Level Modeling of Variation-Induced Faults in Networks-on-Chip. + * Proceedings of the 48th Design Automation Conference (DAC'11) + */ + +#ifndef __MEM_RUBY_NETWORK_FAULT_MODEL_HH__ +#define __MEM_RUBY_NETWORK_FAULT_MODEL_HH__ + +// tool limitations and fixed inputs +#define MAX_VCs 40 +#define MAX_BUFFERS_per_VC 5 +#define BASELINE_TEMPERATURE_CELCIUS 71 + +// C++ includes +#include <string> +using namespace std; + +// GEM5 includes +#include "params/FaultModel.hh" +#include "sim/sim_object.hh" + +class FaultModel : public SimObject +{ + public: + typedef FaultModelParams Params; + FaultModel(const Params *p); + const Params *params() const { return (const Params *)_params; } + + /************************************************************************/ + /********** THE FAULT TYPES SUPPORTED BY THE FAULT MODEL ***************/ + /************************************************************************/ + + enum fault_type + { + data_corruption__few_bits, + data_corruption__all_bits, + flit_conservation__flit_duplication, + flit_conservation__flit_loss_or_split, + misrouting, + credit_conservation__credit_generation, + credit_conservation__credit_loss, + erroneous_allocation__VC, + erroneous_allocation__switch, + unfair_arbitration, + number_of_fault_types + }; + + /************************************************************************/ + /******************** INTERFACE OF THE FAULT MODEL *********************/ + /************************************************************************/ + + enum conf_record_format + { + conf_record_buff_per_vc, + conf_record_vcs, + conf_record_first_fault_type, + conf_record_last_fault_type = conf_record_first_fault_type + number_of_fault_types - 1, + fields_per_conf_record + }; + + enum temperature_record_format + { + temperature_record_temp, + temperature_record_weight, + fields_per_temperature_record + }; + + struct system_conf + { + int vcs; + int buff_per_vc; + float fault_type[number_of_fault_types]; + }; + + int declare_router(int number_of_inputs, + int number_of_outputs, + int number_of_vcs_per_vnet, + int number_of_buff_per_data_vc, + int number_of_buff_per_ctrl_vc); + + string fault_type_to_string(int fault_type_index); + + // the following 2 functions are called at runtime, to get the probability + // of each fault type (fault_vector) or the aggregate fault probability + // (fault_prob). Note: the probability values are provided by reference + // (in the variables fault_vector[] & aggregate_fault_prob respectively). + // Both functions also return a success flag (which is always true if + // temperature ranges from 0C to 125C) + + bool fault_vector(int routerID, + int temperature, + float fault_vector[]); + + bool fault_prob(int routerID, + int temperature, + float *aggregate_fault_prob); + + // for debugging purposes + + void print(void); + + private: + vector <system_conf> configurations; + vector <system_conf> routers; + vector <int> temperature_weights; +}; + +#endif // __MEM_RUBY_NETWORK_FAULT_MODEL_HH__ |