lib/xilinx/tests/xc7series/row_test.cc

/*
 * Copyright (C) 2017-2020  The Project X-Ray Authors.
 *
 * Use of this source code is governed by a ISC-style
 * license that can be found in the LICENSE file or at
 * https://opensource.org/licenses/ISC
 *
 * SPDX-License-Identifier: ISC
 */
#include <prjxray/xilinx/xc7series/configuration_row.h>

#include <gtest/gtest.h>

using namespace prjxray::xilinx;

TEST(RowTest, IsValidFrameAddress) {
	std::vector<xc7series::FrameAddress> addresses;
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 2));

	xc7series::Row row(addresses.begin(), addresses.end());

	EXPECT_TRUE(row.IsValidFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 0)));
	EXPECT_TRUE(row.IsValidFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 0)));
	EXPECT_TRUE(row.IsValidFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 2)));

	EXPECT_FALSE(row.IsValidFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 2)));
	EXPECT_FALSE(row.IsValidFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 2, 0)));
}

TEST(RowTest, GetNextFrameAddressYieldNextAddressInRow) {
	std::vector<xc7series::FrameAddress> addresses;
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 2));

	xc7series::Row row(addresses.begin(), addresses.end());

	auto next_address = row.GetNextFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 0));
	ASSERT_TRUE(next_address);
	EXPECT_EQ(*next_address,
	          xc7series::FrameAddress(xc7series::BlockType::CLB_IO_CLK,
	                                  false, 0, 0, 1));

	next_address = row.GetNextFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 1));
	ASSERT_TRUE(next_address);
	EXPECT_EQ(*next_address,
	          xc7series::FrameAddress(xc7series::BlockType::CLB_IO_CLK,
	                                  false, 0, 1, 0));

	// Rows have unique behavior for GetNextFrameAddress() at the end of a
	// bus. Since the addresses need to be returned in numerically
	// increasing order, all of the rows need to be returned before moving
	// to a different bus.  That means that Row::GetNextFrameAddress() needs
	// to return no object at the end of a bus and let the caller use that
	// as a signal to try the next row.
	next_address = row.GetNextFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 1));
	EXPECT_FALSE(next_address);

	next_address = row.GetNextFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 1));
	ASSERT_TRUE(next_address);
	EXPECT_EQ(*next_address,
	          xc7series::FrameAddress(xc7series::BlockType::BLOCK_RAM,
	                                  false, 0, 0, 2));

	next_address = row.GetNextFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 2));
	EXPECT_FALSE(next_address);
}

TEST(RowTest, GetNextFrameAddressYieldNothingAtEndOfRow) {
	std::vector<xc7series::FrameAddress> addresses;
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 0, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::CLB_IO_CLK, false, 0, 1, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 0));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 1));
	addresses.push_back(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 2));

	xc7series::Row row(addresses.begin(), addresses.end());

	EXPECT_FALSE(row.GetNextFrameAddress(xc7series::FrameAddress(
	    xc7series::BlockType::BLOCK_RAM, false, 0, 0, 2)));
}