GreenBus Extensions for System-On-Chip Exploration

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GreenBus Extensionsfor System-On-Chip Exploration
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Outline

• DUST analysis framework
• Design analysis services
• JAVA viewer
• SQL database support
• GreenBench
• GreenSocs Configuration framework
• Video processor example
• Cell phone example

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Outline

• DUST analysis framework
• Design analysis services
• JAVA viewer
• SQL database support
• GreenBench
• GreenSocs Configuration framework
• Video processor example
• Cell phone example

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DUST Overview
SystemCsimulation
Visualization, Monitoring, Debugging
Analysis backend,SQL database
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DUST Overview
SimulationControl
GreenBus
MonitorServices
Service Manager
InjectionServices
Design-Under-Test
StructureExtraction
SystemC Kernel
SystemC Java
Network Socket
Views
SQL Database
Structure View
Database
Transaction Analyzer
DesignStructure
Transaction Introspection
Transactions
Bus Analyzer
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DUST Overview
SimulationControl
GreenBus
MonitorServices
Service Manager
InjectionServices
DUST Backend
Design-Under-Test
StructureExtraction
SystemC Kernel
SystemC Java
Network Socket
Views
DUST Frontend
SQL Database
Structure View
Database
Transaction Analyzer
DesignStructure
Transaction Introspection
Transactions
Bus Analyzer
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DUST Backend

• Service Manager
• TCP/IP server, runs concurrently to SC kernel
  (POSIX thread)
• XML streaming (data and control)
• Plug-in interface for services
• Services
• Design Structure Service
• Module hierarchy, Processes, Ports, Interfaces,
  Channels
• "GreenBus-aware"
• Transaction Monitor Service
• Record transactions during running simulation
• Configurable introspection depth
• Port Control Service
• Configure transaction recording for each port
  individually
• Call control methods in a port Fault injection
• Pause / resume simulation

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Service Manager
DUST Backend
DataBase
Server
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XML Communication

• Handshake protocol

ltdust_controlgt ltservice_requestgtPortControlServi
celt/service_requestgt ltinitial_services_to_startgt
1lt/initial_services_to_startgt lt/dust_controlgt
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DUST Frontend

• JAVA-based integrated analysis environment

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DUST Frontend

• Design structure visualization

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DUST Frontend

• Design structure visualization

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DUST Frontend

• Design structure visualization

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DUST Frontend

• Design structure visualization

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DUST Frontend

• Transaction Monitoring

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DUST Frontend

• Transaction Monitoring

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DUST Frontend

• Transaction Monitoring

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DUST Frontend

• Transaction Monitoring

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Structure reflection

• DUST macros add context-sensitive information to
  SystemC objects

class GenericRouter public sc_module,
public GenericRouter_if, ..
GenericRouter(sc_module_name name_)
sc_module(name_), target_port("tport"),
init_port("iport"), protocol_port("protocol_port")
GS_TRACE(name(), "I am a generic
router.") target_port.bind_b_if(th
is) SC_METHOD( MasterAccessMonitor )
sensitive ltlt target_port.default_event()
.. ..
DUST_BUS("GenericRouter")
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Structure reflection

• DUST macros used in GreenBus

• DUST_MASTER_PORT(name, protocol)
• DUST_SLAVE_PORT(name, protocol)
• DUST_PORT(name, protocol)
• DUST_BUS(name)
• DUST_MASTER_MODULE(name, protocol)
• DUST_SLAVE_MODULE(name, protocol)
• DUST_PROTOCOL(name)
• DUST_SCHEDULER(name)
• DUST_BRIDGE(name)

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Transaction Monitoring

• gs_dust_port replaces sc_port
• Interface method calls on port (operator -gt) are
  recorded with SCV
• Generates XML element for each transaction phase
  (atom)
• XML stream is sent to JAVA frontend via network
  connection

GreenBus TransactionContainer
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Port Control Service

• Send control commands to ports
• Configure transaction recording
• Inject communication faults
• drop / delay / duplicate / modify packets
• Implement custom port control functions

class dust_injection_if public virtual
bool inject(stdstring xml) 0 virtual
dust_injection_if()
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Port Control Service

• Port control message example

ltxml_injection xmlns\"http//www.eis.cs.tu-bs.de/
DUST/TR\"gt ltchosen_injection_pointgtid0xbfff95e8lt
/chosen_injection_pointgt ltdelaygt
ltpercent_packetsgt25lt/percent_packetsgt
ltconsecutivegttruelt/consecutivegt
ltspecific_delaygt ltvaluegt0.003lt/valuegt
lt/specific_delaygt ltperiod_of_timegt
ltstart_timegt0.5lt/start_timegt
ltend_timegt0.75lt/end_timegt lt/period_of_timegt
lt/delaygt lt/xml_injectiongt
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Port Control Service
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Port Control Service
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Port Control Service
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Port Control Service
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Database Connectivity

• Database client connects to DUST backend
• Stores simulation data in SQL database
• MySQL / PostgreSQL
• JAVA API enables easy database access
• Get transactions for a given time interval
• Inspect transaction payload
• "Live" forwarding of transaction data during
  running simulation
• Compare results of different simulations

SQL Database
Database
DesignStructure
Transactions
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Database Connectivity

• SQL database is automatically created from DUST
  XML schema

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DUST

• Summary
• Non-intrusive analysis and debugging of SystemC
  designs
• Easy to use (include "utils/dust.h")
• Full GreenBus support
• Growing number of visualization frontends
• Extensible architecture (add your own debug
  services, views, )
• Download contribute www.greensocs.com/Dust
• Ongoing work
• SystemC Debugger pause / resume simulation, run
  for n delta cycles, etc.
• Bus protocol analyzer

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• GreenBench

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Outline

• DUST analysis framework
• Design analysis services
• JAVA viewer
• SQL database support
• GreenBench
• GreenSocs Configuration framework
• Video processor example
• Cell phone example

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GreenSocs Configuration Framework

• GS_PARAM wrapper makes module parameters
  configurable

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GreenSocs Configuration Framework

• Configure parameters from within your model

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GreenSocs Configuration Framework

• or by using a configuration file

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GreenSocs Configuration Framework

• Also create communication architecture by config
  file

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GreenSocs Configuration Framework

• Also create communication architecture by config
  file

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GreenSocs Configuration Framework

• Summary
• Easily add configurable parameters to your model
• Use configuration files
• Explore different communication
  architectureswithout re-compiling your sources
• Ongoing work
• System-wide address range management
• Global memory configuration and introspection
• Configure parameters with DUST debugger

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GreenBench

• GreenBench
• Build benchmark suits for SystemC and GreenBus
• Test new SystemC extensions (e.g., DUST)
• Identify missing SystemC features (e.g.,
  synthesis)
• Re-use GreenBench components in your own models
• Two models are donated by TU Braunschweig, E.I.S.
• Video Processor (EmViD)
• Cellphone Example
• Visit www.greensocs.com/GreenBench, download our
  models, and upload your own models!

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EmViD Embedded Video Detection

• Example EmViD system (face detection)

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EmViD Embedded Video Detection

• EmViD models are comprised of Video Processors
  (VIPs)

Channel
Component
(SC_MODULE)
Video
Processing
Video data
Video data
Input port
Output port
(sc_port)
(sc_port)
Process
(SC_THREAD)
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EmViD Embedded Video Detection

• Configuration framework is used to create
  different EmViD models

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EmViD Embedded Video Detection

• Configuration framework is used to create
  different EmViD models

Color-
Erosion,
Labeling
BRAM
BRAM
Matching
Dilation
GreenBus (PLB)
Video-
Video-
DDR-RAM
Input
Output
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EmViD Embedded Video Detection

• Components use different TLM APIs
• SHIP, TAC, OCP
• Create mixed-mode designs
• PV ? BA ? CC
• Numerous config files available
• Test communication architecture exploration with
  GreenBus
• Create new video processors
• Add your own video processing cores

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Thank You
Wolfgang Klingauf Integrated Circuit Design Lab
(E.I.S.) Technical University of
Braunschweig ? w.klingauf_at_tu-bs.de ? 49 (531)
391 3105