89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
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//
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// apic.cpp - Extension to inspect APIC
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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#include "singx86.h"
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static ULONG64 ioApicAddress;
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static ULONG IoApicRead(ULONG64 ioApicAddress, ULONG regAddr)
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{
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ULONG value;
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g_ExtData->WritePhysical(ioApicAddress, ®Addr, sizeof(regAddr), NULL);
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g_ExtData->ReadPhysical(ioApicAddress + 0x10, &value, sizeof(value), NULL);
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return value;
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}
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static const char* DeliveryMode(ULONG lo)
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{
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const char* dm[8] = { "Fixed", "LowPr", "SMI ", "Rsvd ",
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"NMI ", "Init ", "Rsvd ", "ExInt" };
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return dm[(lo >> 8) & 0x7];
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}
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static const char* Destination(ULONG hi, ULONG lo)
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{
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static char buf[16];
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if (lo & 0x0f00)
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{
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sprintf(buf, "Logical:%02x", (hi >> 24) & 0xff);
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} else {
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sprintf(buf, "PhysDst:%02x", (hi >> 24) & 0x0f);
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}
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return buf;
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}
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static const char* TriggerMode(ULONG lo)
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{
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return (lo & 0xf000) ? "lvl" : "edg";
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}
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static const char* Masked(ULONG lo)
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{
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return (lo & 0x10000) ? "masked" : "live ";
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}
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static const char* DeliveryStatus(ULONG lo)
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{
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return (lo & 0x1000) ? "pend" : "idle";
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}
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static const char* RemoteIrr(ULONG lo)
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{
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return ((lo & 0xc000) == 0xc000) ? "remote-irr" : " ";
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}
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static void DumpIoApic(ULONG64 address)
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{
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ULONG value = IoApicRead(address, 0x01);
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ULONG entries = (value >> 16) & 0xff;
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ExtOut("IoApic @ %08x ID: %u Version %02x\n",
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(ULONG) address,
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(IoApicRead(address, 0x02) >> 24) & 0xf,
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value & 0xff);
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for (ULONG i = 0; i <= entries; i++)
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{
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ULONG lo = IoApicRead(address, 0x10 + i * 2);
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ULONG hi = IoApicRead(address, 0x11 + i * 2);
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ExtOut("Inti%02x.: %08x Vec:%02x %s %s %s %s %s %s\n",
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i, lo, lo & 0xff,
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DeliveryMode(lo), Destination(hi, lo), TriggerMode(lo),
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Masked(lo), DeliveryStatus(lo), RemoteIrr(lo));
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}
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}
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EXT_DECL(ioapic) // Defines: PDEBUG_CLIENT Client, PCSTR args
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{
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EXT_ENTER(); // Defines: HRESULT status = S_OK;
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UNREFERENCED_PARAMETER(args);
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// XXX TODO: Get Io Apic addresses from value from MP table.
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DumpIoApic(0xfec00000);
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EXT_LEAVE();
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}
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