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developing data structure TechnologyLibrary to store technology-related information

This commit is contained in:
tangxifan 2020-01-17 10:17:15 -07:00
parent aa070b2a41
commit 771f2d9c37
3 changed files with 95 additions and 30 deletions
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20
libopenfpga/libarchopenfpga/arch/sample_arch.xml
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@ -9,26 +9,26 @@
-->
<openfpga_architecture>
<technology_library>
<transistors name="logic" type="logic">
<device name="logic" type="transistor">
<model type="academia" corner="TOP_TT" ref="M" path="${OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/45nm.pm"/>
<design vdd="0.9" pn_ratio="2"/>
<nmos name="nch" chan_length="40e-9" min_width="140e-9" variation="logic_transistor_var"/>
<pmos name="pch" chan_length="40e-9" min_width="140e-9" variation="logic_transistor_var"/>
</transistors>
<transistors name="io" type="io"/>
</device>
<device name="io" type="transistor"/>
<model type="academia" corner="TT" ref="M" path="${OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/45nm.pm"/>
<design vdd="2.5" pn_ratio="3"/>
<nmos name="nch_25" chan_length="270e-9" min_width="320e-9" variation="io_transistor_var"/>
<pmos name="pch_25" chan_length="270e-9" min_width="320e-9" variation="io_transistor_var"/>
</transistors>
<rram name="mem_rram">
</device>
<device name="mem_rram" type="rram">
<model type="academia" ref="X" path="${OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/rram.pm"/>
<device rlrs="1e4" rhrs="1e5" variation="mem_rram_var"/>
</rram>
<rram name="logic_rram">
<rram rlrs="1e4" rhrs="1e5" variation="mem_rram_var"/>
</device>
<device name="logic_rram" type="rram">
<model type="academia" ref="X" path="${OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/rram.pm"/>
<device rlrs="5e3" rhrs="20e6" variation="logic_rram_var"/>
</rram>
<rram rlrs="5e3" rhrs="20e6" variation="logic_rram_var"/>
</device>
<device_variation>
<variation name="logic_transistor_var" abs_variation="0.1" num_sigma="3"/>
<variation name="io_transistor_var" abs_variation="0.1" num_sigma="3"/>

81
libopenfpga/libarchopenfpga/src/technology_library.h
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@ -4,6 +4,8 @@
/********************************************************************
* This file include the declaration of technology library
*******************************************************************/
#include <string>
#include "technology_library_fwd.h"
/********************************************************************
* Types for technology library attributes
@ -16,26 +18,26 @@
* PTM is the Predictive Technology Model provided by the Arizona
* State University (ASU). Available at ptm.asu.edu
*******************************************************************/
enum e_tech_lib_type {
TECH_LIB_INDUSTRY,
TECH_LIB_ACADEMIA,
NUM_TECH_LIB_TYPES
enum e_tech_lib_model_type {
TECH_LIB_MODEL_INDUSTRY,
TECH_LIB_MODEL_ACADEMIA,
NUM_TECH_LIB_MODEL_TYPES
};
/* Strings correspond to each technology library type */
constexpr std::array<const char*, NUM_TECH_LIB_TYPES> TECH_LIB_TYPE_STRING = {{"industry", "academia"}};
constexpr std::array<const char*, NUM_TECH_LIB_MODEL_TYPES> TECH_LIB_MODEL_TYPE_STRING = {{"industry", "academia"}};
/********************************************************************
* Types of transistor groups which may be defined in a technology library
* We categorize the transistors in terms of their usage in FPGA architecture
* 1. NMOS transistor
* 2. PMOS transistor
* Types of device which may be defined in a technology library
* 1. transistor
* 2. RRAM
*******************************************************************/
enum e_tech_lib_trans_type {
TECH_LIB_TRANS_NMOS,
TECH_LIB_TRANS_PMOS,
enum e_tech_lib_device_type {
TECH_LIB_DEVICE_TRANSISTOR,
TECH_LIB_DEVICE_RRAM,
NUM_TECH_LIB_DEVICE_TYPES
};
/* Strings correspond to transistor type type */
constexpr std::array<const char*, NUM_TECH_LIB_TYPES> TECH_LIB_TRANS_TYPE_STRING = {{"industry", "academia"}};
/* Strings correspond to transistor type */
constexpr std::array<const char*, NUM_TECH_LIB_DEVICE_TYPES> TECH_LIB_DEVICE_TYPE_STRING = {{"transistor", "rram"}};
/********************************************************************
* Types of transistors which may be defined in a technology library
@ -43,19 +45,58 @@ constexpr std::array<const char*, NUM_TECH_LIB_TYPES> TECH_LIB_TRANS_TYPE_STRING
* 2. PMOS transistor
*******************************************************************/
enum e_tech_lib_trans_type {
TECH_LIB_TRANS_NMOS,
TECH_LIB_TRANS_PMOS,
TECH_LIB_TRANS_NMOS,
NUM_TECH_LIB_TRANS_TYPES
};
/* Strings correspond to transistor type type */
constexpr std::array<const char*, NUM_TECH_LIB_TYPES> TECH_LIB_TRANS_TYPE_STRING = {{"industry", "academia"}};
/* Strings correspond to transistor type */
constexpr std::array<const char*, NUM_TECH_LIB_TRANS_TYPES> TECH_LIB_TRANS_TYPE_STRING = {{"pmos", "nmos"}};
/********************************************************************
* Process corners supported
*******************************************************************/
enum e_process_corner {
BEST_CORNER,
TYPICAL_CORNER,
WORST_CORNER
TECH_LIB_CORNER_FF,
TECH_LIB_CORNER_TT,
TECH_LIB_CORNER_SS,
NUM_TECH_LIB_CORNER_TYPES
};
/* Strings correspond to process corner type */
constexpr std::array<const char*, NUM_TECH_LIB_CORNER_TYPES> TECH_LIB_CORNER_TYPE_STRING = {{"FF", "TT", "SS"}};
/********************************************************************
* A data structure to describe technology library
*******************************************************************/
class TechnologyLibrary {
private: /* Internal data */
/* Transistor-related fundamental information */
vtr::vector<TechnologyDeviceId, TechnologyDeviceId> device_ids_;
vtr::vector<TechnologyDeviceId, std::string> device_names_;
vtr::vector<TechnologyDeviceId, e_tech_lib_device_type> device_types_;
vtr::vector<TechnologyDeviceId, e_tech_lib_model_type> device_model_types_;
vtr::vector<TechnologyDeviceId, std::string> device_corners_;
vtr::vector<TechnologyDeviceId, std::string> device_model_refs_;
vtr::vector<TechnologyDeviceId, std::string> device_lib_paths_;
vtr::vector<TechnologyDeviceId, float> device_vdds_;
vtr::vector<TechnologyDeviceId, float> device_pn_ratios_;
/* Transistor models stored in vtr::Point data structure. pmos->x, nmos->y */
vtr::vector<TechnologyDeviceId, vtr::Point<std::string>> transistor_model_names_;
vtr::vector<TechnologyDeviceId, vtr::Point<float>> transistor_model_chan_lengths_;
vtr::vector<TechnologyDeviceId, vtr::Point<float>> transistor_model_min_widths_;
vtr::vector<TechnologyDeviceId, vtr::Point<std::string>> transistor_model_variation_names_;
vtr::vector<TechnologyDeviceId, vtr::Point<TechnologyVariationId>> transistor_model_variation_ids_;
/* ReRAM-related fundamental information */
vtr::vector<TechnologyDeviceId, vtr::Point<float>> rram_resistances_;
vtr::vector<TechnologyDeviceId, float> rram_variation_names_;
vtr::vector<TechnologyDeviceId, TechnologyVariationId> rram_variation_ids_;
/* Variation-related fundamental information */
vtr::vector<TechnologyVariationId, TechnologyVariationId> variation_ids_;
vtr::vector<TechnologyVariationId, std::string> variation_names_;
vtr::vector<TechnologyVariationId, std::string> variation_abs_values_;
vtr::vector<TechnologyVariationId, std::string> variation_num_sigmas_;
};
#endif

24
libopenfpga/libarchopenfpga/src/technology_library_fwd.h Normal file
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@ -0,0 +1,24 @@
/************************************************************************
* A header file for TechnologyLibrary class, including critical data declaration
* Please include this file only for using any TechnologyLibrary data structure
* Refer to circuit_library.h for more details
***********************************************************************/
/************************************************************************
* Create strong id for TechnologyDevice to avoid illegal type casting
***********************************************************************/
#ifndef TECHNOLOGY_LIBRARY_FWD_H
#define TECHNOLOGY_LIBRARY_FWD_H
#include "vtr_strong_id.h"
struct technology_device_id_tag;
struct technology_variation_id_tag;
typedef vtr::StrongId<technology_device_id_tag> TechnologyDeviceId;
typedef vtr::StrongId<technology_variation_id_tag> TechnologyVariationId;
/* Short declaration of class */
class TechnologyLibrary;
#endif