1. TLM Convenience Socket Parvinder Pal Singh Girish Verma

2. Brief note on OSCI TLM2.0 Challenges in TLM2.0 Features provided by Convenience Layer Convenience Socket Modeling Presentation Topics

3. Target Initiator 1. Core Interfaces and TLM2 Sockets 2. Generic payload Command Address Data Byte enables Response status Extensions nb_transport_fw (TRANS, phase, time) b_transport (TRANS, time) nb_transport_bw (TRANS, phase, time) Brief ON OSCI TLM2.0

4. BEGIN_REQEND_REQBEGIN_RESPEND_RESP Approximately-Timed Modeling Loosely – Timed Modeling MASTER SLAVE Call Return b_transportns) MASTER SLAVE

5. To get more timing information To Extend Generic structure to protocol specific Extending Base TLM2.0 END_REQ BEGIN_REQ END_DATA BEGIN_DATA BEGIN_RESP END_RESP GENERIC PAYLOAD Protocol Specific Extensions Payload With Extensions

6. Challenges in TLM2.0 Implementing State Machine Writing FSM for every IP makes it difficult for IP developer Managing TRANS becomes complex Managing TRANS field settings gets tough Compile time Fixing of BUSWIDTH Addition and Deletion of Protocol Specific Extensions to GP Managing the extensions that already have been added to GP

7. Features of Conv’ Layer various abstraction levels supported Memory management for TRANS and its extensions Support to VCD TRACE for trans and its extensions Support to Statistics Collection Bus protocol independent APIs and callbacks One time information for GP extension Phase Bus-Width Configuration

8. Support various Abstraction Level For e.g. OCP-IP define 4 level TL4, TL3, TL2, TL1 Run-time configuration of abstraction level of a transaction Abstraction Levels b_transport Abstraction Level Change request Simulation in progress Slave also configures itself for abstraction level communicated through master

9. No NEED for managing TRANS and its extensions Configures memory manager to provide data and byte enable pointers Configures the number of transactions that are outstanding at any given time by restricting TRANS Memory Management Memory Manager Master Process Transaction Pool For TRANS Pool For Data array Pool For be array Pool For Extension

10. Tracing at all abstraction levels Tracing of GP fields, extensions and phases Contains information like Number of phases sent Number of transaction types sent Number of bytes sent, etc. Provides statistics for a SOCKET VCD Trace and Statistics

11. Protocol Independent APIs Register API for Invalidating DMI API to set trace file Reset Debug Dmi Read write blocking Read write Non blocking get trans b/nb MASTER Register to get write handler Register to get read handler Register debug Register DMI Register Reset Invalidate DMI SLAVE

12. Provides the option whether or not to have callbacks Provides the timing information Callbacks Status read_data(fn_ptr resume_txn, trans, offset, size, request_level) Status write_data(fn_ptr resume_txn, trans, offset, size, request_level) Status write_status(fn_ptr resume_txn, trans) Status accept_command(fn_ptr accepted, trans) Status read_data(fn_ptr resume_txn, trans, offset, size, request_level) Status write_data(fn_ptr resume_txn, trans, offset, size, request_level) Status write_status(fn_ptr resume_txn, trans) MASTER SLAVE

13. read_nb() write_nb() read_nb() b_transport() Transaction Queue b_transport MASTERMaster Convenience Slave Convenience read_data() get_read_handler() accept_command() read_data() SLAVE TL4 Abstraction Level

14. TL1 Abstraction Level write_b() BEGIN_REQ M Conven.S Conven get_write_handler() accept_command() SLAVE END_REQ phase1 phase2 Write_data Write_RespBEGIN_RESP END_RESP MASTER

15. TLM2 checks bus-width at compile time Convenience layer allows the bus-width configuration until BEOE phase Configure a new Bus-width pair without any re-compilation of the application Bus-Width Configuration convenience_initiator_socket m_socket; convenience_target_socket s_socket EOE phase b_transport Mismatch Stop Simulation Return if BW matches Buswidth Configuration Elaboration and beoe phase

16. TLM 2.0 Core Interfaces and Generic Payload Memory Manager Configurable Param Abstract API for FSM IMPLEMENTATION Protocol Specific Implementation API to Add Phases And Extension Convenience Layer Generic API and Callbacks USER IP MODEL TLM2.0 Structure

17. struct bus_protocol_type { typedef memory_manager mm; typedef fsm_factory factory_class; typedef extension extension_class; typedef convenience_config_param config_param; }; template <uint32_t BUSWIDTH = 0, typename TYPES = bus_protocol_type> class convenience_initiator_socket : public transport_initiator_socket <BUSWIDTH, typename TYPES::mm, typename TYPES::extension_class>, public TYPES::config_param Pseudo-Code

18. Thank You!!