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Function RTMPTablePCIInterrupt

RTMPTablePCIInterrupt adds a PCI interrupt routing record to the custom MP Floating Pointer Structure previously created with RTMPTableCreate.

UINT RTMPTablePCIInterrupt(BYTE IoApicID, 
                           BYTE IoApicInt, 
                           BYTE BusID, 
                           BYTE Device, 
                           BYTE IntPin, 
                           BYTE Flags);

Parameters

IoApicID

ID of an I/O APIC previously specified in an RTMPTableIOAPIC call.

IoApicInt

Interrupt input line of the I/O APIC. For most I/O APICs, values in the range 0..23 are supported.

BusID

ID of a PCI bus previously specified in an RTMPTableBus call.

Device

PCI device number of the device generating the interrupt.

IntPin

PCI interrupt pin used by the device. Use values 0..3 for interrupt pins A..D.

Flags

The current release does not define any flag values. This parameter should be set to 0.

return value

Zero if the table's size is exhausted or a value greater zero on success.

This function must be called for each PCI interrupt source the application needs to use. It associates an interrupt pin of a PCI device with an I/O APIC interrupt input line. When switching to APIC mode, RTTarget-32 maps all PCI interrupts such that they occur on the I/O APIC's interrupt input line's IRQ (unless flag RT_APIC_USE_LEGACY_MAP has been specified.

Function RTMPTableInterrupt

Function RTMPTableCPU