104 lines
2.3 KiB
C#
104 lines
2.3 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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using System;
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using Microsoft.Singularity.V1.Services;
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namespace Microsoft.Singularity.Io
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{
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[CLSCompliant(false)]
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public sealed class PciPort
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{
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private PciPortHandle handle;
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internal PciPort(PciPortHandle pciPortHandle)
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{
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this.handle = pciPortHandle;
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}
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~PciPort()
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{
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}
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public void Write8(int offset, byte value)
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{
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if (!PciPortHandle.Write8(handle, offset, value)) {
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DebugStub.Break();
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}
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}
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public void Write16(int offset, ushort value)
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{
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if (!PciPortHandle.Write16(handle, offset, value)) {
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DebugStub.Break();
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}
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}
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public void Write32(int offset, uint value)
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{
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if (!PciPortHandle.Write32(handle, offset, value)) {
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DebugStub.Break();
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}
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}
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public byte Read8(int offset)
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{
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return Read8Impl(offset);
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}
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public ushort Read16(int offset)
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{
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return Read16Impl(offset);
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}
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public uint Read32(int offset)
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{
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return Read32Impl(offset);
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}
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private unsafe byte Read8Impl(int offset)
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{
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byte v;
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if (PciPortHandle.Read8Impl(handle, offset, &v)) {
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return v;
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}
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else {
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DebugStub.Break();
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return 0;
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}
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}
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private unsafe ushort Read16Impl(int offset)
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{
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ushort v;
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if (PciPortHandle.Read16Impl(handle, offset, &v)) {
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return v;
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}
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else {
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DebugStub.Break();
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return 0;
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}
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}
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private unsafe uint Read32Impl(int offset)
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{
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uint v;
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if (PciPortHandle.Read32Impl(handle, offset, &v)) {
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return v;
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}
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else {
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DebugStub.Break();
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return 0;
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}
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}
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}
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}
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