The AMBA VIP Release Notes (for all other models like AXI, AHB, APB) are installed at:

• Synopsys AMBA VIP Release Notes (PDF)

The CHI VIP VMM User Guide is installed at:

• Synopsys CHI VIP VMM User Guide (PDF)

The Synopsys VIP for CHI is a suite of advanced verification components and data objects based on SystemVerilog VMM-compliant technology. This on-line help contains information about the classes, functions, and member variables. It shows class hierarchy and contents and it provides links you can use to navigate to more details. Below is the summary of the components and the user interface of the Synopsys CHI VIP.

CHI VIP Components

• svt_chi_rn_group Defines a VMM group for the Request Node component. The Request Node group encapsulates generators, drivers, and port monitors for protocol layer and link layer. The Request Node group can be configured to operate in active mode and passive mode.
• svt_chi_sn_group Defines a VMM group for the Slave Node component. The Slave Node group encapsulates generators, drivers, and port monitors for protocol layer and link layer. The Slave Node group can be configured to operate in active mode and passive mode.
• svt_chi_system_monitor The system monitor observes transactions across the CHI ports of a single interconnect and performs checks between the transactions of these ports. For the list of system checks supported by the system monitor, please click on the "Protocol Checks" tab in this class reference documentation.
• svt_chi_system_group Defines a System Group for the CHI SVT suite. The CHI System Group encapsulates the CHI RN groups, CHI SN groups, system monitor, interconnect, and the system configuration. The number of CHI RN groups, CHI SN groups is configured based on the system configuration provided by the user.

CHI VIP User Interface
Configuration Objects:
Configuration data objects convey the system level and port level testbench configuration. The configuration data objects contain built-in constraints, which come into effect when the configuration objects are randomized. If the configuration needs to be changed later, it can be done through reconfigure() method of the master, slave, interconnect or system components. The CHI VIP defines following configuration classes:

• svt_chi_system_configuration CHI System configuration
• svt_chi_node_configuration CHI Node configuration for RN and SN groups
• svt_chi_address_configuration Address map configuration (user doesn't need to directly use this, svt_chi_system_configuration uses this)
• svt_chi_interconnect_configuration CHI Interconnect VIP configuration (applicable only when svt_chi_system_configuration :: use_interconnect is set to 1)

Transaction Objects:
Transaction objects, which are extended from the vmm_data base class, define a unit of CHI protocol information that is passed across the bus. The attributes of transaction objects are public and are accessed directly for setting and getting values. Most transaction attributes can be randomized. The transaction object can represent the desired activity to be simulated on the bus, or the actual bus activity that was monitored. CHI VIP defines following transaction classes:

• svt_chi_rn_transaction (CHI RN transaction)
• svt_chi_sn_transaction (CHI SN transaction)
• svt_chi_snoop_transaction (CHI Snoop transaction)
• svt_chi_flit (CHI Flit)
• svt_chi_transaction (Base class for svt_chi_rn_transaction , svt_chi_sn_transaction )
• svt_chi_base_transaction (Base class for svt_chi_transaction , svt_chi_flit )
• svt_chi_common_transaction (Base class for svt_chi_base_transaction , svt_chi_snoop_transaction )
• svt_chi_link_service (CHI Link Layer Service transaction)

Analysis port:
The monitor in all the groups provide an analysis port. At the end of the CHI transaction, the monitor within the CHI RN & SN groups provides the completed svt_chi_rn_transaction & svt_chi_sn_transaction object respectively, from its analysis port.
The analysis port used by port monitor within the groups is:

• svt_chi_node_protocol_monitor :: xact_observed_port
• svt_chi_node_protocol_monitor :: snoop_xact_observed_port

Interfaces and modports:
SystemVerilog models signal connections using interfaces and modports. Interfaces define the set of signals which make up a port connection. Modports define collection of signals for a given port, the direction of the signals, and the clock with respect to which these signals are driven and sampled. CHI VIP provides below interfaces:

• svt_chi_if (Top level interface, which contains an array of RN & SN port sub-interfaces.)

Protocol Checks:
For a complete list of protocol checks supported by the CHI VIP, please click on the "Protocol Checks" tab in this class reference documentation.

Debug features:

• CHI system monitor:
  When CHI system monitor is enabled by setting svt_chi_system_configuration :: system_monitor_enable to 1, following features are applicable
  • svt_chi_system_configuration :: display_summary_report Enables displaying coherent and snoop transaction summary, SN transaction summary towards end of the simulation with UVM_LOW verbosity
  • svt_chi_system_configuration :: enable_summary_reporting Enables interactive display of coherent and snoop transaction summary, SN transaction summary as and when its available with VMM_DEBUG verbosity
  • svt_chi_system_configuration :: enable_summary_tracing Enables interactive writing of coherent and snoop transaction summary, SN transaction summary into respective seperate files as and when its available
• CHI RN group, CHI SN group:
  
  • svt_chi_node_configuration :: enable_pl_reporting Enables interactive display of coherent and snoop transaction tracing summary when these transaction are complete with VMM_VERBOSE verbosity
  • svt_chi_node_configuration :: enable_pl_tracing Enables interactive writing of coherent and snoop transaction tracing summary with corresponding flit info to seperate files when these transactions are complete
  • svt_chi_node_configuration :: enable_ll_reporting Enables interactive display of flit tracing summary when these flits are complete with UVM_FULL verbosity
  • svt_chi_node_configuration :: enable_ll_tracing Enables interactive writing of flit tracing summary to seperate files when these flits are complete
• Protocol Analyzer:
  The following attributes together can be used to control the enabling of Protocol Anlyzer
  • svt_chi_system_configuration :: pa_format_type
    Controls the format of Protocol analyzer file (XML/FSDB/BOTH)
  • svt_chi_node_configuration :: enable_xact_xml_gen
    Controls dumping of the transaction and flits related info into PA file from RN, SN
  • svt_chi_node_configuration :: enable_fsm_xml_gen
    Controls dumping of the link active state machine related info into PA file from RN, SN
  • svt_chi_system_configuration :: enable_xml_gen
    Controls dumping of the coherent and snoop transaction info into PA file from system monitor