1/*
2 * Copyright (c) 2012-2013 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

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486 InterruptCommandRegLow low = regs[APIC_INTERRUPT_COMMAND_LOW];
487 // Check if we're already sending an IPI.
488 if (low.deliveryStatus) {
489 newVal = low;
490 break;
491 }
492 low = val;
493 InterruptCommandRegHigh high = regs[APIC_INTERRUPT_COMMAND_HIGH];
494 TriggerIntMessage message = 0;
495 message.destination = high.destination;
496 message.vector = low.vector;
497 message.deliveryMode = low.deliveryMode;
498 message.destMode = low.destMode;
499 message.level = low.level;
500 message.trigger = low.trigger;
501 ApicList apics;
502 int numContexts = sys->numContexts();
503 switch (low.destShorthand) {
504 case 0:
505 if (message.deliveryMode == DeliveryMode::LowestPriority) {
506 panic("Lowest priority delivery mode "
507 "IPIs aren't implemented.\n");
508 }

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548 for (int i = 0; i < numContexts; i++) {
549 if (i != initialApicId) {
550 apics.push_back(i);
551 }
552 }
553 }
554 break;
555 }
556 // Record that an IPI is being sent if one actually is.
557 if (apics.size()) {
558 low.deliveryStatus = 1;
559 pendingIPIs += apics.size();
560 }
561 regs[APIC_INTERRUPT_COMMAND_LOW] = low;
562 intMasterPort.sendMessage(apics, message, sys->isTimingMode());
563 newVal = regs[APIC_INTERRUPT_COMMAND_LOW];
564 }
565 break;
566 case APIC_LVT_TIMER:
567 case APIC_LVT_THERMAL_SENSOR:
568 case APIC_LVT_PERFORMANCE_MONITORING_COUNTERS:
569 case APIC_LVT_LINT0:
570 case APIC_LVT_LINT1:

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