Intel Extensible Firmware Interface, Specification

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32/64-bit UNDI Specification
Version 1.02 12/12/00 399
// UNDI NvData
//*******************************************************
// Select the type of non-volatile data operation.
#define PXE_OPFLAGS_NVDATA_OPMASK 0x0001
#define PXE_OPFLAGS_NVDATA_READ 0x0000
#define PXE_OPFLAGS_NVDATA_WRITE 0x0001
//*******************************************************
// UNDI Get Status
//*******************************************************
// Return current interrupt status. This will also clear any
// interrupts that are currently set. This can be used in a
// polling routine. The interrupt flags are still set and cleared
// even when the interrupts are disabled.
#define PXE_OPFLAGS_GET_INTERRUPT_STATUS 0x0001
// Return list of transmitted buffers for recycling. Transmit
// buffers must not be changed or unallocated until they have
// recycled. After issuing a transmit command, wait for a
// transmit complete interrupt. When a transmit complete
// interrupt is received, read the transmitted buffers. Do not
// plan on getting one buffer per interrupt. Some NICs and UNDIs
// may transmit multiple buffers per interrupt.
#define PXE_OPFLAGS_GET_TRANSMITTED_BUFFERS 0x0002
//*******************************************************
// UNDI Fill Header
//*******************************************************
#define PXE_OPFLAGS_FILL_HEADER_OPMASK 0x0001
#define PXE_OPFLAGS_FILL_HEADER_FRAGMENTED 0x0001
#define PXE_OPFLAGS_FILL_HEADER_WHOLE 0x0000
//*******************************************************