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Error response for unmapped address or forbidden read/write access (#168)

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* feat: add ability to enable error output on the cpuif, when decoding errors occur (generate_cpuif_err in API).

* fix: move signal to new place (after automatic vers)

* feat: add info about new api (generate_cpuif_err)

* fix: repair readback with latency

* Adding generate_cpuif_err argument to peakrdl-regblock to generate cpuif error response, when the address is decoded incorrectly

* add sw rd or/and wr attribure error response related and add error respone for external mem

* add sw rd or/and wr error response test

* add sw rd or/and wr error response for external register test and fix generation of rtl logic for external register

* add sw rd or/and wr error response for external mem test

* add sw rd or/and wr error response for apb3 imterfaces driver

* add error response test for APB4, AXI4Lite and Avalon interfaces

* rename --generate_cpuif_err to --generate-cpuif-err

* style: minor typo fixes and test clean-up

* refactor: move expected error check inside write/read functions

* feat: add error response check to OBI testbench interface

* feat: split generate-cpuif-err option into err-if-bad-addr and err-if-bad-rw options

* feat: add err_if_bad_addr/rw to cfg_schema

* feat: extend cpuif_err_rsp test to cover all combinations of bad_addr/bad_rw

* style: lint fixes

* fix: removed redundant if node.external condition to help coverage

* Fix dangling hwif_in signals in testcase

---------

Co-authored-by: Denis Trifonov <d.trifonov@yadro.com>
Co-authored-by: Dominik Tanous <tanous@kandou.com>
Co-authored-by: Sebastien Baillou <baillou@kandou.com>
Co-authored-by: Alex Mykyta <amykyta3@users.noreply.github.com>
This commit is contained in:
sbaillou
2025-10-26 02:22:15 +01:00
committed by GitHub
parent bb765e6ae3
commit d69af23be5
16 changed files with 477 additions and 61 deletions
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10
tests/lib/cpuifs/obi/obi_intf_driver.sv
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@@ -111,7 +111,7 @@ interface obi_intf_driver #(
end
//--------------------------------------------------------------------------
task automatic 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, input logic expects_err = 1'b0);
request_t req;
response_t resp;
logic [ID_WIDTH-1:0] id;
@@ -141,18 +141,19 @@ interface obi_intf_driver #(
assert(!$isunknown(resp.rdata)) else $error("Read from 0x%0x returned X's on rdata", addr);
assert(!$isunknown(resp.err)) else $error("Read from 0x%0x returned X's on err", addr);
assert(!$isunknown(resp.rid)) else $error("Read from 0x%0x returned X's on rid", addr);
assert(resp.err == expects_err) else $error("Error read response from 0x%x returned 0x%x. Expected 0x%x", addr, resp.err, expects_err);
data = resp.rdata;
endtask
task automatic 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 = {DATA_WIDTH{1'b1}}, input logic expects_err = 1'b0);
logic [DATA_WIDTH-1:0] data;
read(addr, data);
read(addr, data, expects_err);
data &= mask;
assert(data == expected_data) else $error("Read from 0x%x returned 0x%x. Expected 0x%x", addr, data, expected_data);
endtask
//--------------------------------------------------------------------------
task automatic write(logic [ADDR_WIDTH-1:0] addr, logic [DATA_WIDTH-1:0] data, logic [DATA_WIDTH/8-1:0] strb = '1);
task automatic write(logic [ADDR_WIDTH-1:0] addr, logic [DATA_WIDTH-1:0] data, logic [DATA_WIDTH/8-1:0] strb = {DATA_WIDTH{1'b1}}, input logic expects_err = 1'b0);
request_t req;
response_t resp;
logic [ID_WIDTH-1:0] id;
@@ -183,6 +184,7 @@ interface obi_intf_driver #(
assert(!$isunknown(resp.err)) else $error("Read from 0x%0x returned X's on err", addr);
assert(!$isunknown(resp.rid)) else $error("Read from 0x%0x returned X's on rid", addr);
assert(resp.err == expects_err) else $error("Error write response to 0x%x returned 0x%x. Expected 0x%x", addr, resp.err, expects_err);
endtask
//--------------------------------------------------------------------------