EFI_LEGACY_PIRQ_TABLE_HEADER Struct Reference


Data Fields

UINT32 Signature
UINT8 MinorVersion
UINT8 MajorVersion
UINT16 TableSize
UINT8 Bus
UINT8 DevFun
UINT16 PciOnlyIrq
UINT16 CompatibleVid
UINT16 CompatibleDid
UINT32 Miniport
UINT8 Reserved [11]
UINT8 Checksum

Field Documentation

PCI interrupt router bus.

This byte plus the sum of all other bytes in the LocalPirqTable equal 0x00.

Device ID of a compatible PCI interrupt router.

Vendor ID of a compatible PCI interrupt router.

PCI interrupt router device/function.

0x01 for table version 1.0.

If nonzero, a value passed directly to the IRQ miniport's Initialize function.

0x00.

If nonzero, bit map of IRQs reserved for PCI.

Reserved for future usage.

$PIR.

0x20 + RoutingTableEntries * 0x10.


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