irq-pci.asl

AMI 主板的BIOS源码。

//**********************************************************************;
//     *****************************************************************;
//     *****************************************************************;
//     **                                                             **;
//     **      (C)Copyright 1985-1996, American Megatrends, Inc.      **;
//     **                                                             **;
//     **                     All Rights Reserved.                    **;
//     **                                                             **;
//     **           6145-F Northbelt Pkwy, Norcross, GA 30071         **;
//     **                                                             **;
//     **                     Phone [phone]                    **;
//     **                                                             **;
//     *****************************************************************;
//     *****************************************************************;
//**********************************************************************;
//		DON'T CHANGE ANY CODE UNLESS REQUIRED !!!
//**********************************************************************;
//**********************************************************************;
//	PIIX4 PCI IRQ Links devices
//**********************************************************************;

	OperationRegion(PIX0, PCI_Config, 0x60, 0x4)

Scope(\_SB)
{
	Field(PCI0.SBRG.PIX0,ByteAcc,NoLock,Preserve){
		PIRA,8,                 // IRQA route register
		PIRB,8,                 // IRQB route register
		PIRC,8,                 // IRQC route register
		PIRD,8,                 // IRQD route register
		}

// moved to ASLBUILD.MAK.
//	Name(IPRS,                  // List of possible IRQs
                                // to be returned by _PRS for LINKx devices
//		ResourceTemplate()
//		{
//        		StartDependentFnNoPri()
//                {
//        		IRQ(Level, ActiveLow, Shared ) {3,4,5,6,7,9,10,11,12,14,15}
//                }
//                EndDependentFn()
//		})

//	CreateWordField(IRPS, 0x1, PIRQ)        // Possible IRQ Mask

	Name(BUFA,
    	ResourceTemplate()
	    {
        	IRQ(Level, ActiveLow, Shared ) {15}
        })

        CreateWordField(BUFA, 0x1, IRA0)        // IRQ Mask

        Device(LNKA){

        	Name(_HID, EISAID("PNP0C0F"))
           	Name(_UID, 1)

            Method(_STA)
            {
               	And(PIRA, 0x80, Local0)

               	If(Local0) {Return (0x9)} // LNKA desabled/present/not visible in UI

                Else   {Return (0xb)}     // LNKA enabled
            }

           Method(_PRS,0){
                          Return(IPRS)
                         }

           Method(_DIS){

           	// Disable PIRQ routing
            Or(PIRA, 0x80 ,PIRA)
                     }

                     Method(_CRS) {

                     	And(PIRA, 0x0f, Local0)

                        ShiftLeft(0x1, Local0, IRA0)

                        Return(BUFA)

                        }            // End Method _CRS


	Method(_SRS, 1){
	// ARG0 = PnP Resource String

	CreateWordField(ARG0, 0x01, IRA)	// IRQ Low Mask

	FindSetRightBit(IRA, Local0)
	Decrement(Local0)
	Store(Local0, PIRA)
	}					// End Method _SRS


	}                                       // end Device LNKA

	Device(LNKB){
	Name(_HID, EISAID("PNP0C0F"))
	Name(_UID, 2)
	Method(_STA)
	{
	And(PIRB, 0x80, Local0)
	If(Local0) {Return (0x9)} // desabled/present/not visible in UI
	    Else   {Return (0xb)} // enabled
	}

	Method(_PRS,0){
	Return(IPRS)
	}

	Method(_DIS){

	// Disable PIRQ routing
	Or(PIRB, 0x80 ,PIRB)
	}

	Method(_CRS){

	And(PIRB, 0xf, Local0)

	ShiftLeft(0x1, Local0, IRA0)

	Return(BUFA)

	}                                       // End Method _CRS


	Method(_SRS, 1){
	// ARG0 = PnP Resource String

	CreateWordField(ARG0, 0x01, IRA)	// IRQ Low Mask

	FindSetRightBit(IRA, Local0)
	Decrement(Local0)
	Store(Local0, PIRB)
	}					// End Method _SRS

	}                                       // end Device LNKB


	Device(LNKC){
	Name(_HID, EISAID("PNP0C0F"))
	Name(_UID, 3)
	Method(_STA)
	{
	And(PIRC, 0x80, Local0)
	If(Local0) {Return (0x9)} // desabled/present/not visible in UI
	    Else   {Return (0xb)} // enabled
	}

	Method(_PRS,0){
	Return(IPRS)
	}

	Method(_DIS){

	// Disable PIRQ routing
	Or(PIRC, 0x80 ,PIRC)
	}

	Method(_CRS){

	And(PIRC, 0xf, Local0)

	ShiftLeft(0x1, Local0, IRA0)

	Return(BUFA)

	}                                       // End Method _CRS


	Method(_SRS, 1){
	// ARG0 = PnP Resource String

	CreateWordField(ARG0, 0x01, IRA)	// IRQ Low Mask

	FindSetRightBit(IRA, Local0)
	Decrement(Local0)
	Store(Local0, PIRC)
	}					// End Method _SRS

	}                                       // end Device LNKC


	Device(LNKD){

                 Name(_HID, EISAID("PNP0C0F"))

                 Name(_UID, 4)

         Method(_STA)
         {
            And(PIRD, 0x80, Local0)
            If(Local0) {Return (0x9)} // desabled/present/not visible in UI
            Else       {Return (0xb)} // enabled
            }

    Method(_PRS,0){
                   Return(IPRS)
	}

	Method(_DIS){

	// Disable PIRQ routing

    	Or(PIRD, 0x80 ,PIRD)

	}

	Method(_CRS){

    	And(PIRD, 0xf, Local0)

    	ShiftLeft(0x1, Local0, IRA0)

	Return(BUFA)

	}                                       // End Method _CRS


	Method(_SRS, 1){
	// ARG0 = PnP Resource String

    	CreateWordField(ARG0, 0x01, IRA)	// IRQ Low Mask

        FindSetRightBit(IRA, Local0)
        Decrement(Local0)
        Store(Local0, PIRD)
	}					// End Method _SRS

	}                                       // end Device LNKD
} // end \_SB scope
//**********************************************************************;
//     *****************************************************************;
//     *****************************************************************;
//     **                                                             **;
//     **      (C)Copyright 1985-1996, American Megatrends, Inc.      **;
//     **                                                             **;
//     **                     All Rights Reserved.                    **;
//     **                                                             **;
//     **           6145-F Northbelt Pkwy, Norcross, GA 30071         **;
//     **                                                             **;
//     **                     Phone [phone]                    **;
//     **                                                             **;
//     *****************************************************************;
//     *****************************************************************;
//**********************************************************************;
//		DON'T CHANGE ANY CODE UNLESS REQUIRED !!!
//**********************************************************************;