Node / public / precursor-lxmfchat.git / files / xous-core / emulation / peripherals / spinor_soft_int.cs

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//

// Copyright (c) 2010-2018 Antmicro

// Copyright (c) 2011-2015 Realtime Embedded

//

// This file is licensed under the MIT License.

// Full license text is available in 'licenses/MIT.txt'.

//

using Antmicro.Renode.Core;

using Antmicro.Renode.Core.Structure.Registers;

using Antmicro.Renode.Peripherals.Bus;

namespace Antmicro.Renode.Peripherals.Miscellaneous.Betrusted

{

public class SpinorSoftInt : IDoubleWordPeripheral, IProvidesRegisterCollection<DoubleWordRegisterCollection>, IKnownSize

{

public SpinorSoftInt(Machine machine)

{

this.RegistersCollection = new DoubleWordRegisterCollection(this);

this.IRQ = new GPIO();

DefineRegisters();

Reset();

}

private void DefineRegisters()

{

Registers.EV_STATUS.Define32(this)

.WithFlag(0, FieldMode.Read, name: "SOFTINT", valueProviderCallback: _ => softintStatus)

;

Registers.EV_PENDING.Define32(this)

.WithFlag(0, out this.softintPending, FieldMode.Read | FieldMode.WriteOneToClear, name: "SOFTINT", changeCallback: (_, __) => UpdateInterrupts())

;

Registers.EV_ENABLE.Define32(this)

.WithFlag(0, out this.softintEnabled, name: "SOFTINT", changeCallback: (_, __) => UpdateInterrupts())

;

Registers.SOFTINT.Define32(this)

.WithFlag(0, writeCallback: (_, val) => { if (val) { this.softintStatus = true; UpdateInterrupts(); this.softintStatus = false; } })

;

}

private void UpdateInterrupts()

{

if (this.softintStatus)

{

this.softintPending.Value = true;

}

IRQ.Set(this.softintPending.Value && this.softintEnabled.Value);

}

public void WriteDoubleWord(long address, uint value)

{

RegistersCollection.Write(address, value);

}

public uint ReadDoubleWord(long offset)

{

return RegistersCollection.Read(offset);

}

public long Size { get { return 4096; } }

public DoubleWordRegisterCollection RegistersCollection { get; private set; }

public void Reset()

{

this.softintStatus = false;

this.softintPending.Value = false;

this.softintEnabled.Value = false;

RegistersCollection.Reset();

}

public GPIO IRQ { get; private set; }

private IFlagRegisterField softintEnabled;

private IFlagRegisterField softintPending;

private bool softintStatus;

private enum Registers

{

EV_STATUS = 0x00,

EV_PENDING = 0x04,

EV_ENABLE = 0x08,

SOFTINT = 0x0c

}

}

}