116 lines
2.8 KiB
C#
116 lines
2.8 KiB
C#
///////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: PseudoBus.cs
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//
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// Note:
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//
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using Microsoft.Singularity.Channels;
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using Microsoft.Singularity.Io;
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using System;
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using System.Collections;
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namespace Microsoft.Singularity.Drivers
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{
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// create the resource object for CTR to fill in
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[DriverCategory]
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[Signature("/root/pseudobus0")]
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[EnumeratesDevice("pseudo/...")]
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internal class PseudoBusResources : DriverCategoryDeclaration
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{
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}
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/// <summary>
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/// Bus for pseudo-devices. A pseudo-device is typically a
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/// layer in I/O stack that may or may not be associated
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/// with one or more physical devices.
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/// </summary>
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public class PseudoBus : IBusDevice
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{
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public const string Name = "/pseudo0";
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private static PseudoBus instance = null;
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private SortedList! pseudoDevices;
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internal PseudoBus()
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{
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pseudoDevices = new SortedList();
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}
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void IDevice.Initialize()
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{
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DebugStub.Print("Initializing PseudoBusDevice.\n");
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instance = this;
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RegisterBootPseudoDevices();
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}
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void IDevice.Finalize()
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{
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}
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internal void RegisterPseudoDevice(string! name, IoConfig config)
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{
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pseudoDevices.Add(name, config);
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}
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SortedList IBusDevice.Enumerate()
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{
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return pseudoDevices;
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}
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//
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// Register boot time pseudo devices
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//
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internal void RegisterBootPseudoDevices()
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{
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// Pseudo Devices have no resources (I/O ports, memory, etc.)
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if (instance != null) {
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PseudoConfig config = new PseudoConfig("iotest");
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instance.RegisterPseudoDevice("/test/iotest", config);
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}
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}
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// Allows us to be registered as a root level driver
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public PseudoConfig! ReportConfig()
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{
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PseudoConfig config = new PseudoConfig("root");
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return config;
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}
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}
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public class PseudoConfig : IoConfig
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{
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static private int count = 0;
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public PseudoConfig(string className)
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{
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string[] ids = { String.Format("/pseudo0{0}/{1}", className, count++) };
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this.Ids = ids;
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}
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public override string! ToString()
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{
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assert Ids != null;
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assert Ids.Length > 0;
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string id = Ids[0];
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assert id != null;
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return id;
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}
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public override string ToPrint()
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{
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return ToString();
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}
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}
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}
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