hw/ip/prim/lint/prim.waiver

# Copyright lowRISC contributors.
# Licensed under the Apache License, Version 2.0, see LICENSE for details.
# SPDX-License-Identifier: Apache-2.0
#
# waiver file for prim

# prim_fifo_sync
waive -rules {ONE_BIT_MEM_WIDTH} -location {prim_fifo_sync.sv} -msg {Memory 'gen_normal_fifo.storage' has word width which is single bit wide} \
      -comment "It is permissible that a FIFO has a wordwidth of 1bit"

# prim_fifo_async
waive -rules {ASSIGN_SIGN} -location {prim_fifo_async.sv} -msg {Signed target 'i' assigned unsigned value 'PTR_WIDTH - 3'} \
      -comment "Parameter PTR_WIDTH is unsigned, but integer i is signed. This is fine. Changing the integer to unsigned might \
                cause issues with the for loop never exiting, because an unsigned integer can never become < 0."

# prim_assert
waive -rules {UNDEF_MACRO_REF} -location {prim_assert.sv} -regexp {Macro definition for 'ASSERT_RPT' includes expansion of undefined macro '__(FILE|LINE)__'} \
      -comment "This is an UVM specific macro inside our assertion shortcuts"
# unfortunately most tools do not support line wrapping within the declaration of macro functions, hence we have to waive
# line length violations.
waive -rules {LINE_LENGTH} -location {prim_assert.sv} -msg {Line length of} \
      -comment "Some macros cannot be line-wrapped, as some tools do not support that."

# prim_packer
waive -rules INTEGER           -location {prim_packer.sv} -msg {'i' of type int used as a non-constant value} \
      -comment "This assigns int i (signed) to a multibit logic variable (unsigned), which is fine"

# primitives: prim_subreg
waive -rules INPUT_NOT_READ       -location {prim_subreg.sv} -regexp {Input port 'wd' is not read from} \
      -comment "for RO wd is not used"

# primitives: prim_arbiter_*
waive -rules PARTIAL_CONST_ASSIGN -location {prim_arbiter_*.sv} -regexp {'mask.0.' is conditionally assigned a constant} \
      -comment "makes the code more readable"
waive -rules CONST_FF -location {prim_arbiter_*.sv} -regexp {Flip-flop 'mask.0.' is driven by constant} \
      -comment "makes the code more readable"

# primitives: prim_sram_arbiter
waive -rules CONST_OUTPUT -location {prim_sram_arbiter.sv} -regexp {rsp_error.* is driven by constant} \
      -comment "SRAM protection is not yet implemented"

# primitives: prim_fifos

waive -rules VAR_INDEX_RANGE      -location {prim_fifo_*sync.sv} -regexp {maximum value .* may be too large for 'storage'} \
      -comment "index is protected by control logic"
waive -rules EXPLICIT_BITLEN      -location {prim_fifo_*sync.sv} -regexp {Bit length not specified for constant '1'} \
      -comment "index is protected by control logic"
waive -rules NOT_READ             -location {prim_fifo_async.sv} -regexp {Signal 'nc_decval_msb' is not read} \
      -comment "Store temporary values. Not used intentionally"

waive -rules {INPUT_NOT_READ} -location {prim_fifo_sync.sv} -regexp {Input port '(clk_i|rst_ni)' is not read from, instance.*Depth=0\)} \
      -comment "In passthrough mode, clk and reset are not read form within this module"

# TL-UL fifo
waive -rules {HIER_BRANCH_NOT_READ} -location {tlul_fifo_sync.sv} -regexp {Connected net '(clk_i|rst_ni)' at prim_fifo_sync.sv:.* is not read from in module 'prim_fifo_sync'} \
      -comment "In passthrough mode, clk and reset are not read form within this module"

# primitivies: prim_ram_2p_wrapper
#
#waive -rules NOT_READ -location {prim_ram_*_wrapper*} -regexp {(a|b)_rdata_(q|d)\[38} \
#      -comment "Syndrome is not going out to the interface"