APIC.rar_apic

#define IOREGSELECTPHYADDR 0xfec00000 #define IOREGWINPHYADDR 0xfec00010 #include "ntddk.h" #include "APIC.h" ULONG GetAPICVersion() { KIRQL OldKIRQL; ULONG ulAPICVersion; PHYSICAL_ADDRESS PhysicalAddress; PVOID pRegSelect,pRegWin = NULL; RtlZeroMemory( &PhysicalAddress, sizeof(PHYSICAL_ADDRESS) ); PhysicalAddress.u.LowPart = IOREGSELECTPHYADDR; ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL); KeRaiseIrql( DISPATCH_LEVEL, &OldKIRQL ); KdPrintEx(( DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "OldKIRQL=%d\n", OldKIRQL )); pRegSelect = MmMapIoSpace( PhysicalAddress, 0x14, MmNonCached ); if( !MmIsAddressValid( pRegSelect ) ) { if( pRegSelect ) MmUnmapIoSpace( pRegSelect, 0x14 ); KeLowerIrql(OldKIRQL); return 1; } pRegWin = (UCHAR*)pRegSelect+0x10; *((UCHAR*)pRegSelect) = 0x01; //低8位，选择版本寄存器 ulAPICVersion = *((ULONG*)pRegWin); KdPrintEx(( DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "Current APIC version: 0x%08x\n", ulAPICVersion )); if( pRegSelect ) MmUnmapIoSpace( pRegSelect, 0x14 ); KeLowerIrql(OldKIRQL); return 0; } ULONG ListIRQNumber() { ULONG i; KIRQL OldKIRQL; ULONG ulData; PHYSICAL_ADDRESS PhysicalAddress; PVOID pRegSelect,pRegWin = NULL; RtlZeroMemory( &PhysicalAddress, sizeof(PHYSICAL_ADDRESS) ); PhysicalAddress.u.LowPart = IOREGSELECTPHYADDR; ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL); KeRaiseIrql( DISPATCH_LEVEL, &OldKIRQL ); KdPrintEx(( DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "OldKIRQL=%d\n", OldKIRQL )); pRegSelect = MmMapIoSpace( PhysicalAddress, 0x14, MmNonCached ); if( !MmIsAddressValid( pRegSelect ) ) { if( pRegSelect ) MmUnmapIoSpace( pRegSelect, 0x14 ); KeLowerIrql(OldKIRQL); return 1; } pRegWin = (UCHAR*)pRegSelect+0x10; KdPrintEx(( DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "IOAPIC Redirection Table:\n" )); for( i=0x10; i<0x3f+1; i++ ) { *((UCHAR*)pRegSelect) = i; //低8位，选择重定位表寄存器 ulData = *((ULONG*)pRegWin); if( !(i%2) ) KdPrintEx(( DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "IRQ Number:%02x\n",(UCHAR)(ulData & 0xff) )); KdPrintEx(( DPFLTR_IHVDRIVER_ID, DPFLTR_ERROR_LEVEL, "Offset:%02x,Data:0x%08x\n",i,ulData )); } if( pRegSelect ) MmUnmapIoSpace( pRegSelect, 0x14 ); KeLowerIrql(OldKIRQL); return 0; }