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‎.gitattributes

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# Auto detect text files and perform LF normalization
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* text=auto

‎.gitignore

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.DS_Store
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DerivedData
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xcuserdata
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project.xcworkspace
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build
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xcshareddata
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/MacKernelSDK

‎MacHyperVSupport.xcodeproj/project.pbxproj

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‎MacHyperVSupport/Info.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>$(DEVELOPMENT_LANGUAGE)</string>
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<key>CFBundleExecutable</key>
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<string>$(EXECUTABLE_NAME)</string>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>$(PRODUCT_NAME)</string>
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<key>CFBundlePackageType</key>
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<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
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<key>CFBundleShortVersionString</key>
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<string>$(MARKETING_VERSION)</string>
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<key>CFBundleVersion</key>
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<string>$(CURRENT_PROJECT_VERSION)</string>
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<key>IOKitPersonalities</key>
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<dict>
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<key>HyperVHeartbeat</key>
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<dict>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>IOClass</key>
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<string>HyperVHeartbeat</string>
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<key>IOPropertyMatch</key>
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<dict>
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<key>HVType</key>
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<string>57164f39-9115-4e78-ab55-382f3bd5422d</string>
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</dict>
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<key>IOProviderClass</key>
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<string>HyperVVMBusDevice</string>
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</dict>
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<key>HyperVKeyboard</key>
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<dict>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>IOClass</key>
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<string>HyperVKeyboard</string>
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<key>IOPropertyMatch</key>
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<dict>
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<key>HVType</key>
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<string>f912ad6d-2b17-48ea-bd65-f927a61c7684</string>
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</dict>
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<key>IOProviderClass</key>
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<string>HyperVVMBusDevice</string>
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</dict>
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<key>HyperVMouse</key>
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<dict>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>IOClass</key>
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<string>HyperVMouse</string>
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<key>IOPropertyMatch</key>
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<dict>
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<key>HVType</key>
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<string>cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a</string>
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</dict>
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<key>IOProviderClass</key>
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<string>HyperVVMBusDevice</string>
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</dict>
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<key>HyperVShutdown</key>
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<dict>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>IOClass</key>
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<string>HyperVShutdown</string>
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<key>IOPropertyMatch</key>
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<dict>
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<key>DisabledHVType</key>
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<string>0e0b6031-5213-4934-818b-38d90ced39db</string>
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</dict>
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<key>IOProviderClass</key>
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<string>HyperVVMBusDevice</string>
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</dict>
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<key>HyperVStorage</key>
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<dict>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>IOClass</key>
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<string>HyperVStorage</string>
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<key>IOPropertyMatch</key>
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<dict>
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<key>HVType</key>
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<string>ba6163d9-04a1-4d29-b605-72e2ffb1dc7f</string>
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</dict>
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<key>IOProviderClass</key>
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<string>HyperVVMBusDevice</string>
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<key>Protocol Characteristics</key>
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<dict>
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<key>Physical Interconnect</key>
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<string>SCSI Parallel Interface</string>
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<key>Physical Interconnect Location</key>
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<string>Internal</string>
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</dict>
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</dict>
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<key>HyperVVMBusController</key>
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<dict>
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<key>CFBundleIdentifier</key>
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<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
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<key>IOClass</key>
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<string>HyperVVMBusController</string>
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<key>IONameMatch</key>
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<string>VMBS</string>
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<key>IOProviderClass</key>
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<string>IOACPIPlatformDevice</string>
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</dict>
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</dict>
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<key>NSHumanReadableCopyright</key>
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<string>Copyright © 2021 Goldfish64. All rights reserved.</string>
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<key>OSBundleLibraries</key>
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<dict>
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<key>com.apple.iokit.IOHIDFamily</key>
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<string>1.1</string>
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<key>com.apple.iokit.IOSCSIParallelFamily</key>
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<string>2.0.1</string>
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<key>com.apple.kpi.bsd</key>
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<string>8.0.0</string>
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<key>com.apple.kpi.iokit</key>
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<string>8.0.0</string>
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<key>com.apple.kpi.libkern</key>
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<string>8.0.0</string>
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<key>com.apple.kpi.mach</key>
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<string>8.0.0</string>
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<key>com.apple.kpi.unsupported</key>
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<string>8.0.0</string>
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</dict>
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<key>OSBundleRequired</key>
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<string>Root</string>
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</dict>
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</plist>

‎MacHyperVSupport/IntegrationComponents/HyperVHeartbeat.cpp

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//
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// HyperVHeartbeat.cpp
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// Hyper-V heartbeat driver
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//
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// Copyright © 2021 Goldfish64. All rights reserved.
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//
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#include "HyperVHeartbeat.hpp"
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#include <IOKit/IOPlatformExpert.h>
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#define super HyperVICService
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#define SYSLOG(str, ...) SYSLOG_PRINT("HyperVHeartbeat", str, ## __VA_ARGS__)
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#define DBGLOG(str, ...) DBGLOG_PRINT("HyperVHeartbeat", str, ## __VA_ARGS__)
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OSDefineMetaClassAndStructors(HyperVHeartbeat, super);
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bool HyperVHeartbeat::start(IOService *provider) {
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DBGLOG("Initializing Hyper-V Heartbeat");
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return super::start(provider);
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}
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void HyperVHeartbeat::processMessage() {
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VMBusICMessageHeartbeat heartbeatMsg;
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HyperVVMBusDeviceRequest request = { 0 };
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request.responseData = &heartbeatMsg;
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request.responseDataLength = sizeof (heartbeatMsg);
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//
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// Ignore errors and the acknowledgement interrupt (no data to read).
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//
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if (hvDevice->doRequest(&request) != kIOReturnSuccess || request.responseDataLength == 0) {
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return;
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}
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switch (heartbeatMsg.header.type) {
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case kVMBusICMessageTypeNegotiate:
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firstHeartbeatReceived = false;
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createNegotiationResponse(&heartbeatMsg.negotiate, 3, 3);
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break;
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case kVMBusICMessageTypeHeartbeat:
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//
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// Increment sequence.
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// Host will increment this further before sending a message back.
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//
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//DBGLOG("Got heartbeat, seq = %u", heartbeatMsg.heartbeat.sequence);
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heartbeatMsg.heartbeat.sequence++;
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if (!firstHeartbeatReceived) {
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firstHeartbeatReceived = true;
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SYSLOG("Initialized Hyper-V Heartbeat");
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}
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break;
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default:
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DBGLOG("Unknown IC message type %u", heartbeatMsg.header.type);
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heartbeatMsg.header.status = kHyperVStatusFail;
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break;
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}
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heartbeatMsg.header.flags = kVMBusICFlagTransaction | kVMBusICFlagResponse;
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UInt32 sendLength = request.responseDataLength;
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request = { 0 };
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request.sendData = &heartbeatMsg;
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request.sendDataLength = sendLength;
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request.sendPacketType = kVMBusPacketTypeDataInband;
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hvDevice->doRequest(&request);
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}

‎MacHyperVSupport/IntegrationComponents/HyperVHeartbeat.hpp

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//
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// HyperVHeartbeat.hpp
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// Hyper-V heartbeat driver
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//
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// Copyright © 2021 Goldfish64. All rights reserved.
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//
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#ifndef HyperVHeartbeat_hpp
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#define HyperVHeartbeat_hpp
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#include "HyperVICService.hpp"
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class HyperVHeartbeat : public HyperVICService {
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OSDeclareDefaultStructors(HyperVHeartbeat);
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private:
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bool firstHeartbeatReceived;
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protected:
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void processMessage() APPLE_KEXT_OVERRIDE;
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public:
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//
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// IOService overrides.
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//
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virtual bool start(IOService *provider) APPLE_KEXT_OVERRIDE;
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};
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#endif

‎MacHyperVSupport/IntegrationComponents/HyperVIC.hpp

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//
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// HyperVIC.hpp
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// Hyper-V IC base class
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//
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// Copyright © 2021 Goldfish64. All rights reserved.
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//
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#ifndef HyperVIC_h
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#define HyperVIC_h
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//
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// Message types.
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//
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typedef enum : UInt16 {
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kVMBusICMessageTypeNegotiate = 0,
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kVMBusICMessageTypeHeartbeat = 1,
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kVMBusICMessageTypeKVPExchange = 2,
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kVMBusICMessageTypeShutdown = 3,
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kVMBusICMessageTypeTimeSync = 4,
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kVMBusICMessageTypeVSS = 5,
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kVMBusICMessageTypeFileCopy = 7
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} VMBusICMessageType;
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#define kVMBusICFlagTransaction 1
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#define kVMBusICFlagRequest 2
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#define kVMBusICFlagResponse 4
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typedef struct __attribute__((packed)) {
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UInt32 pipeFlags;
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UInt32 pipeMsgs;
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UInt32 frameworkVersion;
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VMBusICMessageType type;
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UInt32 msgVersion;
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UInt16 dataSize;
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UInt32 status;
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UInt8 transactionId;
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UInt8 flags;
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UInt16 reserved;
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} VMBusICMessageHeader;
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typedef struct __attribute__((packed)) {
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VMBusICMessageHeader header;
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UInt16 frameworkVersionCount;
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UInt16 messageVersionCount;
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UInt32 reserved;
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UInt32 versions[];
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} VMBusICMessageNegotiate;
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typedef struct __attribute__((packed)) {
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VMBusICMessageHeader header;
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UInt64 sequence;
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UInt32 reserved[8];
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} VMBusICMessageHeartbeatSequence;
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typedef struct __attribute__((packed)) {
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union {
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VMBusICMessageHeader header;
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VMBusICMessageNegotiate negotiate;
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VMBusICMessageHeartbeatSequence heartbeat;
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};
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} VMBusICMessageHeartbeat;
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typedef struct __attribute__((packed)) {
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VMBusICMessageHeader header;
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UInt32 reason;
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UInt32 timeoutSeconds;
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UInt32 flags;
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char displayMessage[2048];
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} VMBusICMessageShutdown;
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#endif

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