# Copyright (c) 2020 Alex Forencich
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

TOPLEVEL_LANG = verilog

SIM ?= icarus
WAVES ?= 0

COCOTB_HDL_TIMEUNIT = 1ns
COCOTB_HDL_TIMEPRECISION = 1ps

DUT      = dma_client_axis_source
TOPLEVEL = $(DUT)
MODULE   = test_$(DUT)
VERILOG_SOURCES += ../../rtl/$(DUT).v

# module parameters
export PARAM_RAM_DATA_WIDTH ?= 128
export PARAM_SEG_COUNT ?= $(shell python -c "print(max(2, $(PARAM_RAM_DATA_WIDTH) // 128))")
export PARAM_SEG_DATA_WIDTH ?= $(shell expr $(PARAM_RAM_DATA_WIDTH) / $(PARAM_SEG_COUNT) )
export PARAM_SEG_ADDR_WIDTH ?= 12
export PARAM_SEG_BE_WIDTH ?= $(shell expr $(PARAM_SEG_DATA_WIDTH) / 8 )
export PARAM_RAM_ADDR_WIDTH ?= $(shell python -c "print($(PARAM_SEG_ADDR_WIDTH) + ($(PARAM_SEG_COUNT)*$(PARAM_SEG_BE_WIDTH)-1).bit_length())")
export PARAM_AXIS_DATA_WIDTH ?= 64
export PARAM_AXIS_KEEP_ENABLE ?= $(shell expr $(PARAM_AXIS_DATA_WIDTH) \> 8 )
export PARAM_AXIS_KEEP_WIDTH ?= $(shell expr $(PARAM_AXIS_DATA_WIDTH) / 8 )
export PARAM_AXIS_LAST_ENABLE ?= 1
export PARAM_AXIS_ID_ENABLE ?= 1
export PARAM_AXIS_ID_WIDTH ?= 8
export PARAM_AXIS_DEST_ENABLE ?= 1
export PARAM_AXIS_DEST_WIDTH ?= 8
export PARAM_AXIS_USER_ENABLE ?= 1
export PARAM_AXIS_USER_WIDTH ?= 1
export PARAM_LEN_WIDTH ?= 20
export PARAM_TAG_WIDTH ?= 8

ifeq ($(SIM), icarus)
	PLUSARGS += -fst

	COMPILE_ARGS += -P $(TOPLEVEL).RAM_DATA_WIDTH=$(PARAM_RAM_DATA_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).SEG_COUNT=$(PARAM_SEG_COUNT)
	COMPILE_ARGS += -P $(TOPLEVEL).SEG_DATA_WIDTH=$(PARAM_SEG_DATA_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).SEG_ADDR_WIDTH=$(PARAM_SEG_ADDR_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).SEG_BE_WIDTH=$(PARAM_SEG_BE_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).RAM_ADDR_WIDTH=$(PARAM_RAM_ADDR_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_DATA_WIDTH=$(PARAM_AXIS_DATA_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_KEEP_ENABLE=$(PARAM_AXIS_KEEP_ENABLE)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_KEEP_WIDTH=$(PARAM_AXIS_KEEP_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_LAST_ENABLE=$(PARAM_AXIS_LAST_ENABLE)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_ID_ENABLE=$(PARAM_AXIS_ID_ENABLE)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_ID_WIDTH=$(PARAM_AXIS_ID_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_DEST_ENABLE=$(PARAM_AXIS_DEST_ENABLE)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_DEST_WIDTH=$(PARAM_AXIS_DEST_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_USER_ENABLE=$(PARAM_AXIS_USER_ENABLE)
	COMPILE_ARGS += -P $(TOPLEVEL).AXIS_USER_WIDTH=$(PARAM_AXIS_USER_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).LEN_WIDTH=$(PARAM_LEN_WIDTH)
	COMPILE_ARGS += -P $(TOPLEVEL).TAG_WIDTH=$(PARAM_TAG_WIDTH)

	ifeq ($(WAVES), 1)
		VERILOG_SOURCES += iverilog_dump.v
		COMPILE_ARGS += -s iverilog_dump
	endif
else ifeq ($(SIM), verilator)
	COMPILE_ARGS += -Wno-SELRANGE -Wno-WIDTH

	COMPILE_ARGS += -GRAM_DATA_WIDTH=$(PARAM_RAM_DATA_WIDTH)
	COMPILE_ARGS += -GSEG_COUNT=$(PARAM_SEG_COUNT)
	COMPILE_ARGS += -GSEG_DATA_WIDTH=$(PARAM_SEG_DATA_WIDTH)
	COMPILE_ARGS += -GSEG_ADDR_WIDTH=$(PARAM_SEG_ADDR_WIDTH)
	COMPILE_ARGS += -GSEG_BE_WIDTH=$(PARAM_SEG_BE_WIDTH)
	COMPILE_ARGS += -GRAM_ADDR_WIDTH=$(PARAM_RAM_ADDR_WIDTH)
	COMPILE_ARGS += -GAXIS_DATA_WIDTH=$(PARAM_AXIS_DATA_WIDTH)
	COMPILE_ARGS += -GAXIS_KEEP_ENABLE=$(PARAM_AXIS_KEEP_ENABLE)
	COMPILE_ARGS += -GAXIS_KEEP_WIDTH=$(PARAM_AXIS_KEEP_WIDTH)
	COMPILE_ARGS += -GAXIS_LAST_ENABLE=$(PARAM_AXIS_LAST_ENABLE)
	COMPILE_ARGS += -GAXIS_ID_ENABLE=$(PARAM_AXIS_ID_ENABLE)
	COMPILE_ARGS += -GAXIS_ID_WIDTH=$(PARAM_AXIS_ID_WIDTH)
	COMPILE_ARGS += -GAXIS_DEST_ENABLE=$(PARAM_AXIS_DEST_ENABLE)
	COMPILE_ARGS += -GAXIS_DEST_WIDTH=$(PARAM_AXIS_DEST_WIDTH)
	COMPILE_ARGS += -GAXIS_USER_ENABLE=$(PARAM_AXIS_USER_ENABLE)
	COMPILE_ARGS += -GAXIS_USER_WIDTH=$(PARAM_AXIS_USER_WIDTH)
	COMPILE_ARGS += -GLEN_WIDTH=$(PARAM_LEN_WIDTH)
	COMPILE_ARGS += -GTAG_WIDTH=$(PARAM_TAG_WIDTH)

	ifeq ($(WAVES), 1)
		COMPILE_ARGS += --trace-fst
	endif
endif

include $(shell cocotb-config --makefiles)/Makefile.sim

iverilog_dump.v:
	echo 'module iverilog_dump();' > $@
	echo 'initial begin' >> $@
	echo '    $$dumpfile("$(TOPLEVEL).fst");' >> $@
	echo '    $$dumpvars(0, $(TOPLEVEL));' >> $@
	echo 'end' >> $@
	echo 'endmodule' >> $@

clean::
	@rm -rf iverilog_dump.v
	@rm -rf dump.fst $(TOPLEVEL).fst