569 lines
21 KiB
C#
569 lines
21 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: PnpBios.cs
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//
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// Note:
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//
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//#define VERBOSE
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using Microsoft.Singularity.Channels;
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using Microsoft.Singularity.Io;
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using Microsoft.Singularity.Configuration;
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using System;
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using System.Collections;
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using System.Diagnostics;
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using System.Text;
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using System.Configuration.Assemblies;
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using System.Runtime.Remoting;
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using System.Runtime.InteropServices;
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using System.Runtime.CompilerServices;
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using System.Reflection;
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namespace Microsoft.Singularity.Drivers
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{
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[CLSCompliant(false)]
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public class PnpBios : IBusDevice
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{
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// since this is in the kernel, it can make whatever ports and memory it
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// wants. The purpose of having a decorated DeviceRequirement object is
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// just to generate metadata correctly; in truth, we can't do CTR on
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// this because these resources aren't dynamic, and so we can't count on
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// IoSystem to get the resources for us. Instead, we get our own
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// resources, and then we tell IoSystem about them via the method
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// ReportConfig
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[DriverCategory]
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[Signature("/root/pnp0")]
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[EnumeratesDevice("/pnp/...")]
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class MyConfig : DriverCategoryDeclaration
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{
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[IoMemoryRange(0, Default = 0xf3c30000, Length = 1, AllowWrite = false)]
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IoMemoryRange mem1;
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[IoPortRange(1, Default = 0x20b, Length = 1, AllowWrite = false)]
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IoPortRange port1;
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[IoFixedPortRange(Base = 0x0a79, Length = 0x01, AllowRead = false)]
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IoPortRange isaWritePort;
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[IoFixedPortRange(Base = 0x0279, Length = 0x01, AllowRead = false)]
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IoPortRange isaReadport;
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}
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private static byte lowestbit(uint bits)
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{
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for (byte i = 0; i < 32; i++, bits >>= 1) {
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if ((bits & 1) != 0) {
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return i;
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}
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}
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return byte.MaxValue;
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}
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private static char hexdigit(byte c)
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{
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return (char)((c >= 10) ? ('A' + (char)c - 10) : ('0' + (char)c));
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}
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[StructLayout(LayoutKind.Explicit)]
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[CLSCompliant(false)]
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public struct PNPNODE {
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[FieldOffset( 0)] public ushort Size; //0
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[FieldOffset( 2)] public byte Node; //2
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[FieldOffset( 3)] public byte ProductId0; //3
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[FieldOffset( 4)] public byte ProductId1; //4
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[FieldOffset( 5)] public byte ProductId2; //5
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[FieldOffset( 6)] public byte ProductId3; //6
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[FieldOffset( 7)] public byte DeviceType0; //7
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[FieldOffset( 8)] public byte DeviceType1; //8
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[FieldOffset( 9)] public byte DeviceType2; //9
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[FieldOffset(10)] public ushort DeviceAttributes; //10..11
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}
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private IoMemory! region;
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private IoPort! isaReadPort;
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private IoPort! isaWritePort;
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private IoPort! isaAddressPort;
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private byte isaCsns;
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private string newId; // not thread safe!
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private const ushort ISA_ADDRESS_PORT = 0x0279;
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private const ushort ISA_WRITE_PORT = 0x0A79;
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private const byte ISA_ADDR_WAKE = 0x03;
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private const byte ISA_ADDR_CONFIG = 0x04;
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private const byte ISA_ADDR_STATUS = 0x05;
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private byte GetIsaResByte()
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{
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isaAddressPort.Write8(ISA_ADDR_STATUS);
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while ((isaReadPort.Read8() & 0x1) == 0) {
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// wait for ready.
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}
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isaAddressPort.Write8(ISA_ADDR_CONFIG);
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return isaReadPort.Read8();
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}
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private void GetIsaResBytes(byte[]! buffer, int begin, int limit)
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{
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for (int i = begin; i < limit; i++) {
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buffer[i] = GetIsaResByte();
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}
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}
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public PnpBios(Resources.PnpBiosInfo pbi)
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requires pbi.pnpRegion != null;
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requires pbi.isaReadPort != null;
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{
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region = pbi.pnpRegion.AtOffset(0, (int)pbi.pnpRegion.Length);
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isaReadPort = pbi.isaReadPort;
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isaWritePort = new IoPort(ISA_WRITE_PORT, 1, Access.Write);
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isaAddressPort = new IoPort(ISA_ADDRESS_PORT, 1, Access.Write);
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isaCsns = (byte)pbi.isaCsns;
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}
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public void Initialize()
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{
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}
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public void Finalize()
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{
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}
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private string DecodeId(byte[]! buffer, int offset)
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{
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return "" +
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(char)('@' + (buffer[offset + 0] >> 2)) +
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(char)('@' + (((buffer[offset + 0] & 0x3) << 3) | (buffer[offset + 1] >> 5))) +
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(char)('@' + ((buffer[offset + 1] & 0x1f))) +
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hexdigit((byte)(buffer[offset + 2] >> 4)) +
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hexdigit((byte)(buffer[offset + 2] & 0xf)) +
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hexdigit((byte)(buffer[offset + 3] >> 4)) +
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hexdigit((byte)(buffer[offset + 3] & 0xf));
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}
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private string DecodePnpId(int offset)
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{
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byte[] buffer = new byte [7];
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region.Read8(offset, buffer, 0, 7);
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return DecodeId(buffer, 0);
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}
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private void DecodeIsaLarge(byte[]! buffer, int size, ArrayList! list)
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{
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#if VERBOSE
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DebugStub.Print(" IsaLarge[{0}]: ", __arglist(buffer[0] & 0x7f));
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#endif
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switch (buffer[0] & 0x7f) {
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default:
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#if VERBOSE
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DebugStub.Print(" ???1 {0,2:x2}\n", __arglist(buffer[0] & 0x7f));
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#endif
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break;
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case 0x1:
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if (buffer[10] == 0) {
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break;
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}
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#if VERBOSE
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DebugStub.Print(" Memory inf={0,2:x2} min={1,4:x4}00 max={2,4:x4}00 aln={3,4:x4} len={4,4:x4}00\n",
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__arglist(
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buffer[3],
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BitConverter.ToUInt16(buffer, 4),
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BitConverter.ToUInt16(buffer, 6),
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BitConverter.ToUInt16(buffer, 8),
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BitConverter.ToUInt16(buffer, 10)
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));
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#endif
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list.Add(new IoMemoryRange((uint)BitConverter.ToUInt16(buffer, 4) << 8,
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(uint)BitConverter.ToUInt16(buffer, 10) << 8,
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Access.ReadWrite));
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break;
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case 0x2:
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#if VERBOSE
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DebugStub.Print(" PNP ANSI Id\n");
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#endif
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break;
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case 0x4:
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#if VERBOSE
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DebugStub.Print(" PNP Vendor\n");
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#endif
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break;
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case 0x5:
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if (BitConverter.ToUInt32(buffer, 16) == 0) {
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break;
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}
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#if VERBOSE
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DebugStub.Print(" 32-bit Memory inf={0,2:x2} min={1,8:x8} max={2,8:x8} aln={3,8:x8} len={4,8:x8}\n",
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__arglist(
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buffer[3],
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BitConverter.ToUInt32(buffer, 4),
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BitConverter.ToUInt32(buffer, 8),
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BitConverter.ToUInt32(buffer, 12),
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BitConverter.ToUInt32(buffer, 16)));
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#endif
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list.Add(new IoMemoryRange((uint)BitConverter.ToUInt32(buffer, 4),
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(uint)BitConverter.ToUInt32(buffer, 16),
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Access.ReadWrite));
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break;
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case 0x6:
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if (BitConverter.ToUInt32(buffer, 8) == 0) {
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break;
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}
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#if VERBOSE
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DebugStub.Print(" 32-bit Fixed Memory inf={0,2:x2} bas={1,8:x8}..{2,8:x8}\n",
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__arglist(
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buffer[3],
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BitConverter.ToUInt32(buffer, 4),
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BitConverter.ToUInt32(buffer, 4) + BitConverter.ToUInt32(buffer, 8) - 1
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));
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#endif
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list.Add(new IoMemoryRange((uint)BitConverter.ToUInt32(buffer, 4),
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(uint)BitConverter.ToUInt32(buffer, 8),
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Access.ReadWrite));
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break;
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}
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}
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private void DecodeIsaSmall(byte[]! buffer, int size, ArrayList! list)
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{
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#if VERBOSE
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DebugStub.Print(" IsaSmall[{0}]: ", __arglist(buffer[0] >> 3));
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#endif
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switch (buffer[0] >> 3) {
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default:
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#if VERBOSE
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DebugStub.Print(" ???2 {0,2:x2}\n", __arglist(buffer[0] >> 3));
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#endif
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break;
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case 0x1: // Version
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#if VERBOSE
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DebugStub.Print(" Version PnP={0,2:x2}, Vendor={1,2:x2}\n",
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__arglist(
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buffer[1],
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buffer[2]));
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#endif
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break;
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case 0x2: // Logical Device
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#if VERBOSE
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DebugStub.Print(" Logical Device={0} Flags={1,2:x2} {2,2:x2}\n",
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__arglist(
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DecodeId(buffer, 1),
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buffer[5],
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buffer[6]));
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#endif
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break;
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case 0x3: // Compatible Device
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#if VERBOSE
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DebugStub.Print(" Compatible Device={0}\n",
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__arglist(DecodeId(buffer, 1)));
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#endif
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newId = "/" + DecodeId(buffer,1) + newId;
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break;
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case 0x4: // IRQ
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byte irq = lowestbit(BitConverter.ToUInt16(buffer, 1));
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if (size >= 4) {
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#if VERBOSE
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DebugStub.Print(" IRQ {0,4:x4} type={1,2:x2}\n",
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__arglist(irq, buffer[3]));
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#endif
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}
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else {
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#if VERBOSE
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DebugStub.Print(" IRQ {0,4:x4}\n", __arglist(irq));
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#endif
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}
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list.Add(new IoIrqRange(irq, 1));
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break;
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case 0x5: // DMA
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byte dma = lowestbit(buffer[1]);
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#if VERBOSE
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DebugStub.Print(" DMA {0,2:x2} type={1,2:x2}\n",
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__arglist(dma, buffer[2]));
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#endif
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list.Add(new IoDmaRange(dma, 1));
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break;
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case 0x6: // [
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#if VERBOSE
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DebugStub.Print(" Start pri={0} [\n",
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__arglist((buffer[0] >> 3 == 2 ? buffer[1] : (byte)0)));
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#endif
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break;
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case 0x7: // ]
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#if VERBOSE
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DebugStub.Print(" ] End\n");
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#endif
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break;
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case 0x8: // Port
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if (buffer[7] == 0) {
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break;
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}
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#if VERBOSE
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DebugStub.Print(" I/O Port inf={0,2:x2} min={1,4:x4} max={2,4:x4} aln={3,2:x2} len={4,2:x2} {5,4:x4}..{6,4:x4}\n",
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__arglist(
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buffer[1],
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BitConverter.ToUInt16(buffer, 2),
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BitConverter.ToUInt16(buffer, 4),
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buffer[6],
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buffer[7],
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BitConverter.ToUInt16(buffer, 2),
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BitConverter.ToUInt16(buffer, 2) + buffer[7] - 1));
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#endif
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list.Add(new IoPortRange(BitConverter.ToUInt16(buffer, 2),
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buffer[7],
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Access.ReadWrite));
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break;
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case 0x9: // Fixed Port
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if (buffer[3] == 0) {
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break;
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}
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#if VERBOSE
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DebugStub.Print(" Fixed I/O Port bas={0,4:x4} len={1,2:x2} {2,4:x4}..{3,4:x4}\n",
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__arglist(
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BitConverter.ToUInt16(buffer, 1),
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buffer[3],
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BitConverter.ToUInt16(buffer, 1),
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BitConverter.ToUInt16(buffer, 1) + buffer[3] - 1));
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#endif
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list.Add(new IoPortRange(BitConverter.ToUInt16(buffer, 1),
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buffer[3],
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Access.ReadWrite));
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break;
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case 0xe: // Vendor
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#if VERBOSE
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DebugStub.Print(" Vendor\n");
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#endif
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break;
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}
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}
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private byte[]! SizeBuffer(byte[] buffer, int size)
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{
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if (buffer == null || buffer.Length < size) {
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return new byte[size];
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}
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return buffer;
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}
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private PnpConfig DecodeIsa()
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{
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ArrayList list = new ArrayList();
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byte[] buffer = null;
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for (;;) {
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byte b = GetIsaResByte();
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int size;
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if (b == 0x79) {
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break;
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}
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if ((b & 0x80) != 0) {
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byte b1 = GetIsaResByte();
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byte b2 = GetIsaResByte();
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size = 3 + (((int)b2 << 8) | b1);
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buffer = SizeBuffer(buffer, size);
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buffer[0] = b;
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buffer[1] = b1;
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buffer[2] = b2;
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GetIsaResBytes(buffer, 3, size);
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DecodeIsaLarge(buffer, size, list);
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}
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else {
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size = 1 + (b & 0x7);
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buffer = SizeBuffer(buffer, size);
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buffer[0] = b;
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GetIsaResBytes(buffer, 1, size);
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DecodeIsaSmall(buffer, size, list);
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}
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}
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return NewPnpConfig((!)newId, list);
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}
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private PnpConfig DecodePnp(int offset, int limit)
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{
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ArrayList list = new ArrayList();
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byte[] buffer = null;
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while (offset < limit) {
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if (region.Read8(offset) == 0x79) {
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offset += 2;
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break;
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}
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int size;
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if ((region.Read8(offset) & 0x80) != 0) {
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size = 3 + region.Read16(offset + 1);
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buffer = SizeBuffer(buffer, size);
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region.Read8(offset, buffer, 0, size);
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DecodeIsaLarge(buffer, size, list);
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}
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else {
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size = 1 + (region.Read8(offset) & 0x7);
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buffer = SizeBuffer(buffer, size);
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region.Read8(offset, buffer, 0, size);
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DecodeIsaSmall(buffer, size, list);
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}
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offset += size;
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}
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return NewPnpConfig((!)newId, list);
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}
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private static PnpConfig! NewPnpConfig(string! id, ArrayList! list)
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{
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ArrayList idlist = new ArrayList();
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string pnp_id = "/pnp" + id;
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idlist.Add(pnp_id);
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int pos = 5; // skip "/pnp/"
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// DebugStub.WriteLine("parsing isa pnp id: " + pnp_id);
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for (;;) {
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int next = pnp_id.IndexOf('/', pos);
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if (next == -1)
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break;
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string variant = pnp_id.Substring(0, next);
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idlist.Add(variant);
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// DebugStub.WriteLine("adding variant: " + variant);
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pos = next + 1;
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}
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string[]! ids = (!)(string[])idlist.ToArray(typeof(string));
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// DebugStub.Break();
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return new PnpConfig(ids, list);
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}
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// create a PnpConfig object that tells all of the resources being used
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// by this resource, so that we can account for everything in IoSystem
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// This may seem perverse, but it is necessary! We don't use
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// enumeration to get the root device, and our accounting tool requires
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// the IoConfig objects that are created via enumeration. Since the
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// memory range and readport range are gleaned through the boot process,
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// without enumeration, we have to provide this hack to get the resource
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// config into an IoConfig object, or else our accounting will not
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// include the root bus.
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#if SINGULARITY_KERNEL
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public PnpConfig! ReportConfig()
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#else
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internal PnpConfig! ReportConfig()
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#endif
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{
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ArrayList list = new ArrayList();
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IoRange [] fixedRanges = new IoRange[2];
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list.Add(new IoMemoryRange((UIntPtr)region.PhysicalAddress.Value,
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(UIntPtr)region.Length,
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true, true));
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list.Add(new IoPortRange(isaReadPort.Port,
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isaReadPort.Size,
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isaReadPort.Readable,
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isaReadPort.Writable));
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// since we're creating manual (and, for that matter, trusted)
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// accounting, let's save a bit of work and generate the fixed
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// resources right now.
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fixedRanges[0] = new IoPortRange(isaWritePort.Port,
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isaWritePort.Size,
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isaWritePort.Readable,
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isaWritePort.Writable);
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fixedRanges[1] = new IoPortRange(isaAddressPort.Port,
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isaAddressPort.Size,
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isaAddressPort.Readable,
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isaAddressPort.Writable);
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PnpConfig p = new PnpConfig(new string[] { "" }, list);
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p.FixedRanges = fixedRanges;
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return p;
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}
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public SortedList Enumerate()
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{
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SortedList found = new SortedList();
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|
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Tracing.Log(Tracing.Audit, "Probing ISA Information");
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DebugStub.WriteLine("Enumerating ISA PNP:");
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int node = 0x000;
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for (byte csn = 1; csn <= isaCsns; csn++) {
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#if VERBOSE
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DebugStub.Print("Reading csn={0}\n", __arglist(csn));
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#endif
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isaAddressPort.Write8(ISA_ADDR_WAKE);
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isaWritePort.Write8(csn);
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|
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byte[] buffer = new byte[9];
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GetIsaResBytes(buffer, 0, 9);
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newId = "/" + DecodeId(buffer, 0);
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DebugStub.Print(newId);
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DebugStub.Print("/");
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|
DebugStub.Print(node);
|
|
DebugStub.Print(":\n");
|
|
found.Add(String.Format("/{0,3:x3}", node++), DecodeIsa());
|
|
}
|
|
|
|
#if VERBOSE
|
|
DebugStub.Print("\n");
|
|
#endif
|
|
// See http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/devids.txt
|
|
node = 0x100;
|
|
for (int offset = 0; offset < region.Length;) {
|
|
ushort size = region.Read16(offset);
|
|
#if VERBOSE
|
|
ushort attr = region.Read16(offset + 10);
|
|
#endif
|
|
|
|
newId = "/" + DecodePnpId(offset + 3);
|
|
|
|
#if VERBOSE
|
|
DebugStub.Print(" {0,8:x8} {1} {2,4:x4}",
|
|
__arglist((uint)(region.PhysicalAddress.Value + offset), newId, attr));
|
|
String s = "";
|
|
|
|
if ((attr & 0x0100) != 0) s += " dyn";
|
|
if ((attr & 0x0080) != 0) s += " onl";
|
|
if ((attr & 0x0040) != 0) s += " rmv";
|
|
if ((attr & 0x0020) != 0) s += " dck";
|
|
if ((attr & 0x0010) != 0) s += " ipl";
|
|
if ((attr & 0x0008) != 0) s += " inp";
|
|
if ((attr & 0x0004) != 0) s += " out";
|
|
if ((attr & 0x0002) != 0) s += " cfg";
|
|
if ((attr & 0x0001) != 0) s += " dis";
|
|
|
|
DebugStub.WriteLine(s);
|
|
#endif
|
|
|
|
DebugStub.WriteLine("{0}/{1:x3}:", __arglist(newId, node));
|
|
found.Add(String.Format("/{0,3:x3}", node++),
|
|
DecodePnp(offset + 12, offset + size));
|
|
|
|
offset += size;
|
|
}
|
|
DebugStub.WriteLine("");
|
|
return found;
|
|
}
|
|
}
|
|
}
|