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Rework cpuif to support transaction pipelining. Add more docs. update simulator

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This commit is contained in:
Alex Mykyta
2022-02-13 17:25:31 -08:00
parent de5eecf0e7
commit d0ba488904
21 changed files with 493 additions and 68 deletions
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14
test/lib/cpuifs/apb3/apb3_intf_driver.sv
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@@ -40,7 +40,7 @@ interface apb3_intf_driver #(
input PSLVERR;
endclocking
task reset();
task automatic reset();
cb.PSEL <= '0;
cb.PENABLE <= '0;
cb.PWRITE <= '0;
@@ -48,7 +48,10 @@ interface apb3_intf_driver #(
cb.PWDATA <= '0;
endtask
task write(logic [ADDR_WIDTH-1:0] addr, logic [DATA_WIDTH-1:0] data);
semaphore txn_mutex = new(1);
task automatic write(logic [ADDR_WIDTH-1:0] addr, logic [DATA_WIDTH-1:0] data);
txn_mutex.get();
##0;
// Initiate transfer
@@ -66,9 +69,11 @@ interface apb3_intf_driver #(
// Wait for response
while(cb.PREADY !== 1'b1) @(cb);
reset();
txn_mutex.put();
endtask
task read(logic [ADDR_WIDTH-1:0] addr, output logic [DATA_WIDTH-1:0] data);
task automatic read(logic [ADDR_WIDTH-1:0] addr, output logic [DATA_WIDTH-1:0] data);
txn_mutex.get();
##0;
// Initiate transfer
@@ -89,9 +94,10 @@ interface apb3_intf_driver #(
assert(!$isunknown(cb.PSLVERR)) else $error("Read from 0x%0x returned X's on PSLVERR", addr);
data = cb.PRDATA;
reset();
txn_mutex.put();
endtask
task assert_read(logic [ADDR_WIDTH-1:0] addr, logic [DATA_WIDTH-1:0] expected_data, logic [DATA_WIDTH-1:0] mask = '1);
task automatic assert_read(logic [ADDR_WIDTH-1:0] addr, logic [DATA_WIDTH-1:0] expected_data, logic [DATA_WIDTH-1:0] mask = '1);
logic [DATA_WIDTH-1:0] data;
read(addr, data);
data &= mask;