Altera Mentor Verification IP Altera Edition AMBA AXI3/4T Manuel d'utilisateur Page 172
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Mentor VIP AE AXI3/4 User Guide, V10.2b
154
SystemVerilog Tutorials
Verifying a Slave DUT
September 2013
Example 6-16. handle_write_resp_ready()
// Task : handle_write_resp_ready
// This method assert/de-assert the write response channel ready signal.
// Assertion and de-assertion is done based on following variable's value:
// m_wr_resp_phase_ready_delay
// master_ready_delay_mode
task automatic handle_write_resp_ready;
bit seen_valid_ready;
int tmp_ready_delay;
axi4_master_ready_delay_mode_e tmp_mode;
forever
begin
wait(m_wr_resp_phase_ready_delay > 0);
tmp_ready_delay = m_wr_resp_phase_ready_delay;
tmp_mode = master_ready_delay_mode;
if (tmp_mode == AXI4_VALID2READY)
begin
fork
bfm.execute_write_resp_ready(1'b0);
join_none
bfm.get_write_response_cycle;
repeat(tmp_ready_delay - 1) bfm.wait_on(AXI4_CLOCK_POSEDGE);
bfm.execute_write_resp_ready(1'b1);
seen_valid_ready = 1'b1;
end
else // AXI4_TRANS2READY
begin
if (seen_valid_ready == 1'b0)
begin
do
bfm.wait_on(AXI4_CLOCK_POSEDGE);
while (!((bfm.BVALID === 1'b1) && (bfm.BREADY === 1'b1)));
end
fork
bfm.execute_write_resp_ready(1'b0);
join_none
repeat(tmp_ready_delay) bfm.wait_on(AXI4_CLOCK_POSEDGE);
fork
bfm.execute_write_resp_ready(1'b1);
join_none
seen_valid_ready = 1'b0;
end
end
endtask
- 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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