Livt.Bus

tests/bridges/Axi4LiteToAvalonBridgeTest.lvt

namespace Livt.Bus.Tests.Bridges

using Livt.Bus.Avalon.Testing
using Livt.Bus.Axi4Lite.Testing
using Livt.Bus.Bridges

/**
 * Verifies AXI4-Lite transactions converted to Avalon-MM.
 */
@Test
component Axi4LiteToAvalonBridgeTest
{
	// AXI4-Lite transaction source under test.
	upstream: Axi4LiteTestMaster32

	// Bridge subject under test.
	bridge: Axi4LiteToAvalonBridge32

	// Configurable Avalon-MM target.
	target: AvalonTestSlave32

	/**
	 * Connects the AXI4-Lite source, bridge, and Avalon target.
	 */
	new()
	{
		this.upstream = new Axi4LiteTestMaster32()
		this.bridge = new Axi4LiteToAvalonBridge32(this.upstream)
		this.target = new AvalonTestSlave32(this.bridge)
	}

	/**
	 * Verifies delayed requests, masked writes, responses, and timeout translation.
	 */
	@Test
	fn ForwardsTransactionsAndResponses()
	{
		target.Clear()
		target.Configure(2 as uint, 0b00)
		var bridgeTimeout = this.context.TicksFor(10us)
		var upstreamTimeout = this.context.TicksFor(20us)
		bridge.SetTimeoutTicks(bridgeTimeout)
		upstream.SetTimeoutTicks(upstreamTimeout)
		assert bridge.GetTimeoutTicks() == bridgeTimeout
		assert upstream.TryWrite32(0x08 as uint, 0x11223344 as uint, 0b1111) == true
		assert upstream.TryWrite32(0x08 as uint, 0xAA00CC00 as uint, 0b1010) == true
		assert upstream.TryRead32(0x08 as uint) == true
		assert upstream.LastReadValue() == (0xAA22CC44 as uint)
		assert upstream.LastResponse() == 0b00
		target.Configure(0 as uint, 0b10)
		assert upstream.TryRead32(0x08 as uint) == true
		assert upstream.LastResponse() == 0b10

		bridge.SetTimeoutTicks(3 as uint)
		upstream.SetTimeoutTicks(10 as uint)

		target.Configure(100 as uint, 0b00)
		assert upstream.TryWrite32(0x10 as uint, 0x55667788 as uint, 0b1111) == true
		assert upstream.LastResponse() == Axi4LiteToAvalonBridge32.RESPONSE_SLVERR
		assert bridge.IsRecovering() == true
		Simulation.Wait(120)
		assert bridge.IsRecovering() == false

		assert upstream.TryRead32(0x08 as uint) == true
		assert upstream.LastResponse() == Axi4LiteToAvalonBridge32.RESPONSE_SLVERR
		assert bridge.LastTimedOut() == true
		Simulation.Wait(120)
		assert bridge.IsRecovering() == false

		target.Configure(0 as uint, 0b00)
		bridge.SetTimeoutTicks(10 as uint)
		assert upstream.TryRead32(0x08 as uint) == true
		assert upstream.LastReadValue() == (0xAA22CC44 as uint)
		assert bridge.LastTimedOut() == false
	}
}