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axi_scoreboard: avoid false negs for mem-mapped misaligned reads. #308

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Jul 25, 2023
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axi_scoreboard: avoid false negs for mem-mapped misaligned reads. #308

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7 changes: 6 additions & 1 deletion src/axi_test.sv
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Original file line number Diff line number Diff line change
Expand Up @@ -2046,6 +2046,7 @@ package axi_test;
byte_t act_data;
byte_t exp_data[$];
byte_t tst_data[$];
int first_byte_to_check;
forever begin
wait (this.ar_sample[id].size() > 0);
ar_beat = this.ar_sample[id].pop_front();
Expand All @@ -2060,6 +2061,10 @@ package axi_test;
ar_beat.ax_burst, i);
beat_address = axi_pkg::aligned_addr(beat_address, ar_beat.ax_size);
bus_address = axi_pkg::aligned_addr(beat_address, BUS_SIZE);
if(i!=0)
first_byte_to_check = 0;
else
first_byte_to_check = ar_beat.ax_addr - beat_address;
if (!this.memory_q.exists(bus_address)) begin
for (int unsigned j = 0; j < axi_pkg::num_bytes(BUS_SIZE); j++) begin
this.memory_q[bus_address+j].push_back(8'bxxxxxxxx);
Expand All @@ -2068,7 +2073,7 @@ package axi_test;
// Assert that the correct data is read.
if (this.check_en[ReadCheck] &&
(r_beat.r_resp inside {axi_pkg::RESP_OKAY, axi_pkg::RESP_EXOKAY})) begin
for (int unsigned j = 0; j < axi_pkg::num_bytes(ar_beat.ax_size); j++) begin
for (int unsigned j = first_byte_to_check; j < axi_pkg::num_bytes(ar_beat.ax_size); j++) begin
idx_data = 8*BUS_SIZE'(beat_address+j);
act_data = r_beat.r_data[idx_data+:8];
exp_data = this.memory_q[beat_address+j];
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