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Mentor VIP AE AXI3/4 User Guide, V10.2b
616
VHDL Tutorials
Verifying a Slave DUT
September 2013
All other transaction fields default to legal protocol values (see create_write_transaction()
procedure for details).
Example 11-10. Write Transaction Creation and Execution
-- 4 x Writes
-- Write data value 1 on byte lanes 1 to address 1.
create_write_transaction(1, tr_id, index, axi4_tr_if_0(index));
data_words(31 downto 0) := x"00000100";
set_data_words(data_words, tr_id, index, axi4_tr_if_0(index));
set_write_strobes(2, tr_id, index, axi4_tr_if_0(index));
report "master_test_program: Writing data (1) to address (1)";
-- By default it will run in Blocking mode
execute_transaction(tr_id, index, axi4_tr_if_0(index));
In the complete Master Test Program three subsequent write transactions are created and
executed in a similar manner to that shown in Example 11-10. See VHDL AXI4 Master BFM
Test Program for details.
Read Transaction Creation and Execution
The code excerpt in Example 11-11 reads the data that has been previously written into the
slave memory. The Master Test Program first creates a read transaction by calling the
create_read_transaction() procedure, providing only the start address argument. The optional
burst-length automatically defaults to a value of zero—indicating a burst length of a single beat.
The set_size() procedure is then called to set the transaction size field to a single byte
(AXI4_BYTES_1), and the set_id() procedure call sets the transaction id field to be 1. The read
transaction is then executed on the protocol signals by calling the execute_transaction()
procedure.
The read data is obtained using the get_data_words() procedure to get the data_words
transaction field value. The result of the read data is compared with the expected data—and a
message displays the transcript.
Example 11-11. Read Transaction Creation and Execution
--4 x Reads
--Read data from address 1.
create_read_transaction(1, tr_id, index, axi4_tr_if_0(index));
set_id(1, tr_id, index, axi4_tr_if_0(index));
set_size(AXI4_BYTES_1, tr_id, index, axi4_tr_if_0(index));
execute_transaction(tr_id, index, axi4_tr_if_0(index));
get_data_words(data_words, tr_id, index, axi4_tr_if_0(index));
if(data_words(31 downto 0) = x"00000100") then
report "master_test_program: Read correct data (1) at address (1)";
else
hwrite(lp, data_words(31 downto 0));
- Verification IP Altera 1
- Edition 1
- AMBA AXI3/4 1
- User Guide 1
- Table of Contents 10
- List of Examples 13
- List of Figures 16
- List of Tables 17
- About This User Guide 19
- Protocol Restrictions 19
- Supported Simulators 20
- Simulator GCC Requirements 21
- Chapter 1 23
- Mentor VIP Altera Edition 23
- What Is a Transaction? 24
- An AXI Transaction 24
- Chapter 2 31
- SystemVerilog API Overview 31
- Transaction Record 33
- Table 2-1. Transaction Fields 35
- AXI3 BFM Delay Mode 48
- Chapter 3 51
- SystemVerilog Master API 57
- Chapter 4 87
- SystemVerilog Slave API 93
- Operational 100
- Transaction 100
- AXI3 Example 101
- AXI4 Example 101
- September 2013 107
- AXI3 BFM 109
- Helper Functions 118
- Chapter 5 121
- Monitor BFM Protocol Support 122
- Monitor Timing and Events 122
- Monitor BFM Configuration 122
- Timing Variables 124
- Slave Attributes 125
- Error Detection 125
- Monitor Assertions 126
- SystemVerilog Monitor API 127
- Prototype 128
- Arguments 128
- Arguments config_name 130
- (AXI4) Configuration name: 130
- Chapter 6 155
- SystemVerilog Tutorials 155
- AXI3 BFM Master Test Program 156
- AXI4 BFM Master Test Program 161
- Verifying a Slave DUT 162
- Verifying a Master DUT 173
- Example 6-30. process_write 184
- Example 6-31. handle_write 185
- AXI4 BFM Slave Test Program 186
- Internal Memory 187
- Example 6-44. handle_read 197
- Example 6-45. process_write 198
- Chapter 7 203
- VHDL API Overview 203
- Test Program VHDL 204
- VHDL to SV Wrapper 204
- Configuration 205
- Creating Transactions 206
- AXI4 Transaction Definition 207
- Table 7-1. Transaction Fields 209
- Transaction Field Description 209
- Protocol Transaction Fields 209
- Executing Transactions 212
- Waiting Events 213
- Access Transaction Record 214
- Operation Mode 216
- Channel Handshake Delay 217
- AXI4 BFM Handshake Delay 218
- Data Beat Done 220
- Transaction Done 220
- Chapter 8 221
- Master BFM Protocol Support 222
- Master Timing and Events 222
- Master BFM Configuration 222
- Master Assertions 225
- AXI4 Assertion Configuration 226
- VHDL Master API 227
- Protocol 233
- Arguments cache 255
- AXI4 BFM 297
- Chapter 9 365
- VHDL AXI3 and AXI4 Slave BFMs 365
- Slave BFM Configuration 366
- Slave Assertions 369
- AXI3 Assertion Configuration 370
- VHDL Slave API 371
- Returns transaction_id 378
- Chapter 10 505
- VHDL Monitor API 511
- Chapter 11 627
- VHDL Tutorials 627
- Example 11-29. handle read 656
- Example 11-38. process_write 668
- Chapter 12 673
- Running the Qsys Tool 676
- Running Simulation 679
- Example Script Processing 682
- Appendix A 685
- Assertions 685
- AXI4 Assertions 698
- Appendix B 715
- Programs 715
- Appendix C 751
- End-User License Agreement 779
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