536 lines
17 KiB
C#
536 lines
17 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: MpResources.cs
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//
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// Note:
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// Intel MP Specification 1.4
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namespace Microsoft.Singularity.Hal
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{
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using Microsoft.Singularity.Io;
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using Microsoft.Singularity;
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using Microsoft.Singularity.Hal;
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using System;
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using System.Collections;
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using System.Diagnostics;
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[CLSCompliant(false)]
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internal class MpFloatingPointer
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{
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private const uint Signature = 0x5f504d5f;
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internal uint ConfTableBase;
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internal byte Revision;
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internal byte [] Feature;
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internal byte ConfigurationType
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{
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get { return Feature[0]; }
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}
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internal bool MpConfTablePresent
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{
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get { return Feature[0] == 0; }
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}
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internal bool ImcrPresent
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{
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get { return (Feature[1] & 0x80) != 0; }
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}
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internal bool MultipleClockSources
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{
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get { return (Feature[1] & 0x40) != 0; }
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}
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internal static MpFloatingPointer Parse(IoMemory region)
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{
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uint signature = region.Read32(0);
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if (signature != Signature) {
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return null;
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}
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int length = region.Read8(8) * 16;
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if (length != 16) {
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return null;
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}
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byte checksum = 0;
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for (int i = 0; i < length; i++) {
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checksum += region.Read8((int) i);
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}
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if (checksum != 0) {
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return null;
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}
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MpFloatingPointer m = new MpFloatingPointer();
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m.ConfTableBase = region.Read32(4);
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m.Revision = region.Read8(9);
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m.Feature = new byte [5];
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for (int i = 0; i < m.Feature.Length; i++) {
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m.Feature[i] = region.Read8(0xb + i);
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}
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return m;
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}
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}
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[CLSCompliant(false)]
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internal class MpConfTable
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{
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private const uint Signature = 0x504d4350;
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private const uint FixedLength = 0x2c;
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internal ushort BaseTableLength;
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internal byte Revision;
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internal uint OemTableBase;
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internal ushort OemTableSize;
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internal ushort EntryCount;
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internal uint LocalApicBase;
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internal ushort ExtendedTableLength;
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internal byte ExtendedTableChecksum;
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internal string OemId;
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internal string ProductId;
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internal static MpConfTable Parse(IoMemory region)
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{
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if (region.Read32(0) != Signature) {
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return null;
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}
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int length = region.Read16(4);
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DebugStub.Print("MP Conf Table length {0}\n", __arglist(length));
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#if NOTYET
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byte checksum = 0;
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for (int i = 0; i < length; i++) {
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checksum += region.Read8(i);
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}
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if (checksum != 0) {
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return null;
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}
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#endif
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MpConfTable confTable = new MpConfTable();
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confTable.BaseTableLength = region.Read16(4);
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confTable.Revision = region.Read8(7);
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confTable.OemTableBase = region.Read32(0x1c);
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confTable.OemTableSize = region.Read16(0x20);
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confTable.EntryCount = region.Read16(0x22);
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confTable.LocalApicBase = region.Read32(0x24);
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confTable.ExtendedTableLength = region.Read16(0x28);
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confTable.ExtendedTableChecksum = region.Read8(0x2a);
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confTable.OemId = region.ReadAsciiZeroString(8, 8);
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confTable.ProductId = region.ReadAsciiZeroString(0x10, 0x0c);
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return confTable;
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}
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}
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[CLSCompliant(false)]
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internal class MpProcessorEntry
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{
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internal const byte EntryType = 0x00;
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internal const int Length = 0x14;
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internal byte LocalApicId;
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internal byte LocalApicVersion;
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internal byte CpuFlags;
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internal uint CpuSignature;
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internal uint FeatureFlags;
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internal bool Enabled
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{
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get { return (CpuFlags & 0x01) != 0; }
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}
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internal bool BootStrapProcessor
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{
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get { return (CpuFlags & 0x02) != 0; }
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}
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[Conditional("MP_TABLE_DEBUG")]
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internal void DebugPrint()
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{
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DebugStub.Print("CPU Apic Id {0:x2} Version {1:x2} CpuFlags {2:x2} " +
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"Signature {3:x8} Features {4:x8}\n",
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__arglist(
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LocalApicId,
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LocalApicVersion,
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CpuFlags,
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CpuSignature,
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FeatureFlags));
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}
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internal static MpProcessorEntry Parse(IoMemory region,
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int length,
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ref int offset)
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{
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Debug.Assert(length >= offset + Length);
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Debug.Assert(region.Read8(offset + 0) == EntryType);
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MpProcessorEntry e = new MpProcessorEntry();
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e.LocalApicId = region.Read8(offset + 1);
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e.LocalApicVersion = region.Read8(offset + 2);
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e.CpuFlags = region.Read8(offset + 3);
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e.CpuSignature = region.Read32(offset + 4);
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e.FeatureFlags = region.Read32(offset + 8);
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e.DebugPrint();
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offset += Length;
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return e;
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}
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}
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internal enum BusType : byte
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{
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CBUS = 0,
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CBUSII = 1,
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EISA = 2,
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FUTURE = 3,
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INTERN = 4,
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ISA = 5,
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MBI = 6,
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MBII = 7,
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MCA = 8,
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MPI = 9,
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MPSA = 10,
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NUBUS = 11,
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PCI = 12,
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PCMCIA = 13,
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TC = 14,
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VL = 15,
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VME = 16,
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XPRESS = 17,
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LAST = 17,
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UNKNOWN = 255,
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}
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[CLSCompliant(false)]
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internal class MpBusEntry
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{
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internal const byte EntryType = 0x01;
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internal const int Length = 0x08;
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// Bus type names 1-1 correspondence with BusType enum.
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private static string [] busNames = new string [(int)BusType.LAST + 1]
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{
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"CBUS ", "CBUSII", "EISA ", "FUTURE", "INTERN", "ISA ",
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"MBI ", "MBII ", "MCA ", "MPI ", "MPSA ", "NUBUS ",
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"PCI ", "PCMCIA", "TC ", "VL ", "VME ", "XPRESS"
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};
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internal byte BusId;
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internal BusType BusType;
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[Conditional("MP_TABLE_DEBUG")]
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internal void DebugPrint()
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{
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DebugStub.Print("BusId {0:x2} BusType {1:x2}\n", __arglist(BusId, BusName));
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}
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internal string BusName
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{
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get
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{
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if (BusType == BusType.UNKNOWN) {
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return "UNKNOWN";
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}
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return busNames[(int)BusType];
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}
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}
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internal static MpBusEntry Parse(IoMemory region,
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int length,
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ref int offset)
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{
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Debug.Assert(length >= offset + Length);
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Debug.Assert(region.Read8(offset + 0) == EntryType);
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MpBusEntry e = new MpBusEntry();
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e.BusId = region.Read8(offset + 1);
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e.BusType = BusType.UNKNOWN;
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string name = region.ReadAsciiZeroString(offset + 2, 6);
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e.BusType = BusType.UNKNOWN;
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for (int i = 0; i <= (int)BusType.LAST; i++) {
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if (name == busNames[i]) {
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e.BusType = (BusType)i;
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break;
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}
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}
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e.DebugPrint();
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offset += Length;
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return e;
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}
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}
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[CLSCompliant(false)]
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internal class MpIoApicEntry
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{
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internal const byte EntryType = 0x02;
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internal const int Length = 0x08;
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internal byte Id;
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internal byte Version;
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internal byte Flags;
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internal uint BaseAddress;
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internal bool Enabled { get { return (Flags & 0x01) == 0x01; } }
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[Conditional("MP_TABLE_DEBUG")]
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internal void DebugPrint()
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{
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DebugStub.Print("Id {0:x2} Version {1:x2} Flags {2:x2} BaseAddress {3:x8}\n",
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__arglist(Id, Version, Flags, BaseAddress));
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}
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internal static MpIoApicEntry Parse(IoMemory region,
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int length,
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ref int offset)
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{
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Debug.Assert(length >= offset + Length);
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Debug.Assert(region.Read8(offset + 0) == EntryType);
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MpIoApicEntry e = new MpIoApicEntry();
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e.Id = region.Read8(offset + 1);
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e.Version = region.Read8(offset + 2);
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e.Flags = region.Read8(offset + 3);
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e.BaseAddress = region.Read32(offset + 4);
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e.DebugPrint();
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offset += Length;
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return e;
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}
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}
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internal enum InterruptType : byte
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{
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INT = 0,
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NMI = 1,
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SMI = 2,
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ExtINT = 3,
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}
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internal enum Polarity : ushort
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{
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Bus = 0,
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ActiveHigh = 1,
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Reserved = 2,
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ActiveLow = 3,
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}
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internal enum Trigger : ushort
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{
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Bus = 0,
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Edge = 4,
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Reserved = 8,
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Level = 12,
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}
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[CLSCompliant(false)]
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internal class MpInterruptEntry
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{
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internal const byte IoEntryType = 0x03;
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internal const byte LocalEntryType = 0x04;
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internal const int Length = 0x08;
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internal byte EntryType;
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internal byte Interrupt;
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internal ushort Flags;
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internal byte BusId;
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internal byte BusIrq;
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internal byte ApicId;
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internal byte ApicLine;
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internal bool ApicRedirect
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{
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get { return Interrupt == (byte)InterruptType.INT; }
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}
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internal Polarity PolarityType
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{
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get { return (Polarity) (Flags & 0x3); }
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}
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internal Trigger TriggerType
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{
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get { return (Trigger) (Flags & 0xc); }
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}
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[Conditional("MP_TABLE_DEBUG")]
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internal void DebugPrint()
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{
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DebugStub.Print("{0} Interrupt {1:x2} Flags {2:x4} BusId {3:x2} " +
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"BusIrq {4:x2} ApicId {5:x2} ApicLine {6:x2}\n",
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__arglist(
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EntryType == IoEntryType ? "Io" : "Local",
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Interrupt,
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Flags,
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BusId,
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BusIrq,
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ApicId,
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ApicLine));
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}
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internal static MpInterruptEntry Parse(IoMemory region,
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int length,
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ref int offset)
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{
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Debug.Assert(length >= offset + Length);
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byte entry = region.Read8(offset + 0);
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Debug.Assert(entry == IoEntryType || entry == LocalEntryType);
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MpInterruptEntry e = new MpInterruptEntry();
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e.EntryType = entry;
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e.Interrupt = region.Read8(offset + 1);
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e.Flags = region.Read16(offset + 2);
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e.BusId = region.Read8(offset + 4);
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e.BusIrq = region.Read8(offset + 5);
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e.ApicId = region.Read8(offset + 6);
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e.ApicLine = region.Read8(offset + 7);
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e.DebugPrint();
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offset += Length;
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return e;
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}
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}
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[CLSCompliant(false)]
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internal class MpResources
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{
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static IoMemory mpFloatRegion;
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static IoMemory mpConfTableRegion;
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internal static MpFloatingPointer FloatingPointer;
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internal static MpConfTable ConfTable;
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internal static ArrayList ProcessorEntries;
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internal static ArrayList BusEntries;
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internal static ArrayList IoApicEntries;
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internal static ArrayList IoInterruptEntries;
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internal static ArrayList LocalInterruptEntries;
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internal static void Parse(IoMemory region,
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int length,
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uint entryCount)
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{
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int offset = 0;
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for (int i = 0; i < entryCount; i++) {
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switch (region.Read8(offset)) {
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case MpProcessorEntry.EntryType:
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ProcessorEntries.Add(
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MpProcessorEntry.Parse(region, length, ref offset)
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);
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break;
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case MpBusEntry.EntryType:
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BusEntries.Add(
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MpBusEntry.Parse(region, length, ref offset)
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);
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break;
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case MpIoApicEntry.EntryType:
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IoApicEntries.Add(
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MpIoApicEntry.Parse(region, length, ref offset)
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);
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break;
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case MpInterruptEntry.IoEntryType:
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IoInterruptEntries.Add(
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MpInterruptEntry.Parse(region, length, ref offset)
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);
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break;
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case MpInterruptEntry.LocalEntryType:
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LocalInterruptEntries.Add(
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MpInterruptEntry.Parse(region, length, ref offset)
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);
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break;
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}
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}
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}
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private static UIntPtr GetMpFloatBase()
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{
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unsafe
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{
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return new UIntPtr (Platform.ThePlatform.MpFloat32);
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}
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}
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internal static MpBusEntry GetBusEntryById(byte id)
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{
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foreach (MpBusEntry be in BusEntries) {
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if (be.BusId == id) {
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return be;
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}
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}
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return null;
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}
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internal static void ParseMpTables()
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{
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UIntPtr mpFloat = GetMpFloatBase();
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if (mpFloat == UIntPtr.Zero) {
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DebugStub.Print("MP Floating Pointer Structure not found.\n");
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return;
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}
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mpFloatRegion =
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IoMemory.MapPhysicalMemory(mpFloat, new UIntPtr(16), true, false);
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FloatingPointer = MpFloatingPointer.Parse(mpFloatRegion);
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if (FloatingPointer == null) {
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DebugStub.Print("Failed to parse MP Floating Pointer " +
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"Structure.\n");
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return;
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}
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if (FloatingPointer.MpConfTablePresent) {
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mpConfTableRegion = IoMemory.MapPhysicalMemory(
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new UIntPtr(FloatingPointer.ConfTableBase),
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new UIntPtr(0x2c), true, false);
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DebugStub.Print("Found MP Conf Table\n");
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ConfTable = MpConfTable.Parse(mpConfTableRegion);
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if (ConfTable == null) {
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DebugStub.Print("Failed to parse MP Configuration table.\n");
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}
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IoMemory mpResourceRegion =
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IoMemory.MapPhysicalMemory(
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new UIntPtr(FloatingPointer.ConfTableBase + 0x2c),
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new UIntPtr(ConfTable.BaseTableLength - 0x2c),
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true, false);
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DebugStub.Print("Parsing MP Conf Table Resources\n");
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MpResources.Parse(mpResourceRegion,
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ConfTable.BaseTableLength - 0x2c,
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ConfTable.EntryCount);
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}
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else {
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DebugStub.Print("MP Configuration table not present.\n");
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DebugStub.Print("MP Floating Pointer features: " +
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"{0:x8} {1:x8} {2:x8} {3:x8} {4:x8}\n",
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__arglist(
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FloatingPointer.Feature[0],
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FloatingPointer.Feature[1],
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FloatingPointer.Feature[2],
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FloatingPointer.Feature[3],
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FloatingPointer.Feature[4]));
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}
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}
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static MpResources()
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{
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ProcessorEntries = new ArrayList();
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BusEntries = new ArrayList();
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IoApicEntries = new ArrayList();
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IoInterruptEntries = new ArrayList();
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LocalInterruptEntries = new ArrayList();
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}
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}
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}
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