Livt.IO

tests/ethernet/Dp83848PhyTest.lvt

namespace Livt.IO.Tests

using Livt.IO
using Livt.IO.Phy

/**
 * Owns a fresh simulation fixture; its single test exercises reset startup and frame behavior.
 */
@Test
@Context(ClockFrequency = 50MHz)
component Dp83848PhyTest
{
	// Owned PHY manager/register model and board startup/restart stimulus.
	registers: Dp83848Registers
	phy: Dp83848Phy<1, 1us>
	startup: bool
	restart: bool

	/**
	 * Constructs the test-owned devices and binds their clock and signal dependencies.
	 */
	new()
	{
		this.registers = new Dp83848Registers()
		this.phy = new Dp83848Phy<1, 1us>(registers, startup, restart)
	}

	/**
	 * Waits for bounded PHY management and polling to complete.
	 */
	fn Settle()
	{
		for (var i = 0; i < 2000; i++) {
			state {}
		}
	}

	/**
	 * Exercises this scenario once from the fixture reset state and checks completion and ownership.
	 */
	@Test
	fn NegotiatesBothSpeedsAndRecovers()
	{
		assert !phy.ready
		this.startup = true
		this.Settle()
		assert phy.ready
		assert phy.speed == EthernetSpeed.Mbps100
		assert registers.advertisement == 0x0141
		assert registers.mode == 0
		this.registers.status = 0x0017
		this.Settle()
		assert phy.ready
		assert phy.speed == EthernetSpeed.Mbps10
		this.registers.status = 0x0013
		this.Settle()
		assert !phy.ready
		this.registers.status = 0
		this.Settle()
		assert !phy.ready
		this.registers.status = 0x0015
		this.Settle()
		assert phy.ready
		this.registers.fail = true
		this.Settle()
		assert !phy.ready
		this.registers.fail = false
		this.Settle()
		assert phy.ready
		this.registers.wrongId = true
		this.restart = !restart
		this.Settle()
		assert !phy.ready
	}
}