drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/nfp_xpb.h

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000/nfp_xpb.h

Extension

.h

Size

729 bytes

Lines

28

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef NFP6000_XPB_H
#define NFP6000_XPB_H

/* For use with NFP6000 Databook "XPB Addressing" section
 */
#define NFP_XPB_OVERLAY(island)  (((island) & 0x3f) << 24)

#define NFP_XPB_ISLAND(island)   (NFP_XPB_OVERLAY(island) + 0x60000)

#define NFP_XPB_ISLAND_of(offset) (((offset) >> 24) & 0x3F)

/* For use with NFP6000 Databook "XPB Island and Device IDs" chapter
 */
#define NFP_XPB_DEVICE(island, slave, device) \
	(NFP_XPB_OVERLAY(island) | \
	 (((slave) & 3) << 22) | \
	 (((device) & 0x3f) << 16))

#endif /* NFP6000_XPB_H */

Annotation

• Atlas domain: Driver Families / drivers/net.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.