#include <hal.h>
#include "apicp.h"
#include <smp.h>
#include <debug.h>

Include dependency graph for apicsmp.c:

Macros
#define	NDEBUG

Functions
FORCEINLINE VOID	ApicRequestGlobalInterrupt (_In_ UCHAR DestinationProcessor, _In_ UCHAR Vector, _In_ APIC_MT MessageType, _In_ APIC_TGM TriggerMode, _In_ APIC_DSH DestinationShortHand)

VOID NTAPI	HalpRequestIpi (_In_ KAFFINITY TargetProcessors)

VOID	ApicStartApplicationProcessor (_In_ ULONG NTProcessorNumber, _In_ PHYSICAL_ADDRESS StartupLoc)

Variables
PPROCESSOR_IDENTITY	HalpProcessorIdentity

Macro Definition Documentation

◆ NDEBUG

#define NDEBUG

Definition at line 15 of file apicsmp.c.

Function Documentation

◆ ApicRequestGlobalInterrupt()

FORCEINLINE VOID ApicRequestGlobalInterrupt	(	_In_ UCHAR	DestinationProcessor,
		_In_ UCHAR	Vector,
		_In_ APIC_MT	MessageType,
		_In_ APIC_TGM	TriggerMode,
		_In_ APIC_DSH	DestinationShortHand
	)

Parameters

Vector	- Specifies the interrupt vector to be delivered.
MessageType	- Specifies the message type sent to the CPU core interrupt handler. This can be one of the following values: APIC_MT_Fixed - Delivers an interrupt to the target local APIC specified in Destination field. APIC_MT_LowestPriority - Delivers an interrupt to the local APIC executing at the lowest priority of all local APICs. APIC_MT_SMI - Delivers an SMI interrupt to target local APIC(s). APIC_MT_RemoteRead - Delivers a read request to read an APIC register in the target local APIC specified in Destination field. APIC_MT_NMI - Delivers a non-maskable interrupt to the target local APIC specified in the Destination field. Vector is ignored. APIC_MT_INIT - Delivers an INIT request to the target local APIC(s) specified in the Destination field. TriggerMode must be APIC_TGM_Edge, Vector must be 0. APIC_MT_Startup - Delivers a start-up request (SIPI) to the target local APIC(s) specified in Destination field. Vector specifies the startup address. APIC_MT_ExtInt - Delivers an external interrupt to the target local APIC specified in Destination field.
TriggerMode	- The trigger mode of the interrupt. Can be: APIC_TGM_Edge - The interrupt is edge triggered. APIC_TGM_Level - The interrupt is level triggered.
DestinationShortHand	- Specifies where to send the interrupt. APIC_DSH_Destination APIC_DSH_Self APIC_DSH_AllIncludingSelf APIC_DSH_AllExclusingSelf

See also: "AMD64 Architecture Programmer's Manual Volume 2 System Programming" Chapter 16 "Advanced Programmable Interrupt Controller (APIC)" 16.5 "Interprocessor Interrupts (IPI)"

Definition at line 63 of file apicsmp.c.

{
    ULONG Flags;
    APIC_INTERRUPT_COMMAND_REGISTER Icr;
 
    /* Disable interrupts so that we can change IRR without being interrupted */
    Flags = __readeflags();
    _disable();
 
    /* Wait for the APIC to be idle */
    do
    {
        Icr.Long0 = ApicRead(APIC_ICR0);
    } while (Icr.DeliveryStatus);
 
    /* Setup the command register */
    Icr.LongLong = 0;
    Icr.Vector = Vector;
    Icr.MessageType = MessageType;
    Icr.DestinationMode = APIC_DM_Physical;
    Icr.DeliveryStatus = 0;
    Icr.Level = 0;
    Icr.TriggerMode = TriggerMode;
    Icr.RemoteReadStatus = 0;
    Icr.DestinationShortHand = DestinationShortHand;
    Icr.Destination = DestinationProcessor;
 
    /* Write the low dword last to send the interrupt */
    ApicWrite(APIC_ICR1, Icr.Long1);
    ApicWrite(APIC_ICR0, Icr.Long0);
 
    /* Finally, restore the original interrupt state */
    if (Flags & EFLAGS_INTERRUPT_MASK)
    {
        _enable();
    }
}

Referenced by ApicStartApplicationProcessor().

◆ ApicStartApplicationProcessor()

VOID ApicStartApplicationProcessor	(	_In_ ULONG	NTProcessorNumber,
		_In_ PHYSICAL_ADDRESS	StartupLoc
	)

Definition at line 118 of file apicsmp.c.

{
    ASSERT(StartupLoc.HighPart == 0);
    ASSERT((StartupLoc.QuadPart & 0xFFF) == 0);
    ASSERT((StartupLoc.QuadPart & 0xFFF00FFF) == 0);
 
    /* Init IPI */
    ApicRequestGlobalInterrupt(HalpProcessorIdentity[NTProcessorNumber].LapicId, 0,
        APIC_MT_INIT, APIC_TGM_Edge, APIC_DSH_Destination);
 
    /* De-Assert Init IPI */
    ApicRequestGlobalInterrupt(HalpProcessorIdentity[NTProcessorNumber].LapicId, 0,
        APIC_MT_INIT, APIC_TGM_Level, APIC_DSH_Destination);
 
    /* Stall execution for a bit to give APIC time: MPS Spec - B.4 */
    KeStallExecutionProcessor(200);
 
    /* Startup IPI */
    ApicRequestGlobalInterrupt(HalpProcessorIdentity[NTProcessorNumber].LapicId, (StartupLoc.LowPart) >> 12,
        APIC_MT_Startup, APIC_TGM_Edge, APIC_DSH_Destination);
}

Referenced by HalStartNextProcessor().

◆ HalpRequestIpi()

VOID NTAPI HalpRequestIpi ( _In_ KAFFINITY TargetProcessors )

Definition at line 111 of file apicsmp.c.

{
    UNIMPLEMENTED;
    __debugbreak();
}

Referenced by HalRequestIpi().

Variable Documentation

◆ HalpProcessorIdentity

PPROCESSOR_IDENTITY HalpProcessorIdentity

extern

Definition at line 21 of file madt.c.