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SystemVerilog API Overview
Creating Transactions
Mentor Verification IP AE AMBA AXI4-Stream User Guide, V10.3
25
April 2014
The SystemVerilog Master BFM API allows you to create a master transaction by providing
only an optional burst_length argument to indicate the number of transfers within a packet. All
other protocol transaction fields automatically default to legal protocol values to create a master
transaction record. Refer to create_master_transaction() for default protocol transaction field
values.
The SystemVerilog Slave BFM API allows you to create a slave transaction with no arguments.
All protocol transaction fields automatically default to legal protocol values to create a slave
transaction record. Refer to create_slave_transaction() for default protocol transaction field
values.
The SystemVerilog Monitor BFM API allows you to create a monitor transaction with no
arguments. All protocol transaction fields automatically default to legal protocol values to
create a complete monitor transaction record. Refer to create_monitor_transaction() for default
protocol transaction field values.
Note
If you change the default value of a protocol transaction field, it is valid for all future
transactions until you set a new value.
create_*_transaction()
The create_master_transaction(), create_slave_transaction() and create_monitor_transaction()
BFM API functions create a master, a slave, and a monitor transaction, respectively.
Example 2-4 shows a master BFM test program creating a master transaction with a packet
length of 10 transfers.
operation_mode An enumeration to hold the operation mode of the transaction.
The following are two types of operation mode:
AXI4STREAM_TRANSACTION_NON_BLOCKING
AXI4STREAM_TRANSACTION_BLOCKING
The field content is not transferred over the AXI4-Stream
protocol signals during a transaction.
transfer_done An unsized bit array to hold the done flag for each transfer within
a packet. The field content is not transferred over the protocol
signals during a transaction.
transaction_done A bit to hold the done flag for a complete transaction. The field
content is not transferred over the protocol signals during a
transaction.
Table 2-1. Transaction Record Fields (cont.)
Transaction Field Description
- AMBA AXI4-Stream User Guide 1
- Table of Contents 3
- List of Examples 10
- List of Figures 11
- List of Tables 12
- About This User Guide 13
- Supported Simulators 13
- Simulator GCC Requirements 14
- Chapter 1 17
- Mentor VIP Altera Edition 17
- What Is a Transaction? 18
- AXI4-Stream Transactions 19
- Chapter 2 21
- SystemVerilog API Overview 21
- Configuration 22
- Creating Transactions 22
- Transaction Record 23
- Executing Transactions 26
- Waiting Events 27
- Access Transaction Record 27
- Operation Mode 28
- Handshake Delay 29
- Transfer Done 30
- Transaction Done 30
- Chapter 3 31
- SystemVerilog Master BFM 31
- Master BFM Configuration 32
- Master Assertions 34
- SystemVerilog Master API 35
- Returns 36
- Arguments config_name 37
- Chapter 4 43
- SystemVerilog Slave BFM 43
- SystemVerilog Slave API 47
- Chapter 5 55
- SystemVerilog Monitor BFM 55
- SystemVerilog Monitor API 59
- Chapter 6 67
- SystemVerilog Tutorials 67
- Chapter 7 75
- VHDL API Overview 75
- Test Program VHDL 76
- Chapter 8 87
- VHDL Master BFM API 91
- April 2014 100
- Prototype 118
- Arguments 118
- VHDL Master BFM 122
- VHDL Slave BFM 123
- Chapter 9 123
- Slave BFM Configuration 124
- Slave Assertions 125
- VHDL Slave BFM API 126
- Chapter 10 157
- VHDL Monitor BFM 157
- Monitor BFM Configuration 158
- Monitor Assertions 159
- VHDL Monitor BFM API 161
- Chapter 11 181
- VHDL Tutorials 181
- Master BFM Test Program 182
- Verifying a Master DUT 185
- Chapter 12 189
- Running the Qsys Tool 193
- Running a Simulation 195
- ModelSim Simulation 196
- Editing the modelsim.ini File 199
- Questa Simulation 200
- Cadence IES Simulation 200
- Synopsys VCS Simulation 202
- Chapter 13 205
- Assertions 205
- Appendix A 209
- Programs 209
- Appendix B 213
- VHDL Slave BFM Code Example 216
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