christoph/interrupt-handling-using-the-x86-apic
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Christoph Urlacher
2023-02-26 21:12:51 +01:00
commit d2ec37332f
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code/lapic_sipi_example.cpp Normal file
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void LocalApic::issueSIPI(uint8_t cpuId, uint32_t page) {
ICREntry icrEntry{};
icrEntry.vector = page;
icrEntry.deliveryMode = ICREntry::DeliveryMode::STARTUP;
icrEntry.destinationMode = ICREntry::DestinationMode::PHYSICAL;
icrEntry.level = ICREntry::Level::ASSERT;
icrEntry.triggerMode = ICREntry::TriggerMode::EDGE;
icrEntry.destinationShorthand = ICREntry::DestinationShorthand::NO;
icrEntry.destination = cpuId;
writeICR(icrEntry); // Writing the ICR issues an IPI
}