drivers/gpu/drm/i915/pxp/intel_pxp_cmd_interface_42.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/i915/pxp/intel_pxp_cmd_interface_42.h

Extension

.h

Size

1057 bytes

Lines

44

Domain

Driver Families

Bucket

drivers/gpu

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• intel_pxp_cmd_interface_cmn.h

Detected Declarations

• struct pxp42_create_arb_in
• struct pxp42_create_arb_out
• struct pxp42_inv_stream_key_in
• struct pxp42_inv_stream_key_out

Annotated Snippet

struct pxp42_create_arb_in {
	struct pxp_cmd_header header;
	u32 protection_mode;
#define PXP42_ARB_SESSION_MODE_HEAVY 0x2
	u32 session_id;
} __packed;

/* PXP-Output-Packet: Init Session */
struct pxp42_create_arb_out {
	struct pxp_cmd_header header;
} __packed;

/* PXP-Input-Packet: Invalidate Stream Key */
struct pxp42_inv_stream_key_in {
	struct pxp_cmd_header header;
	u32 rsvd[3];
} __packed;

/* PXP-Output-Packet: Invalidate Stream Key */
struct pxp42_inv_stream_key_out {
	struct pxp_cmd_header header;
	u32 rsvd;
} __packed;

#endif /* __INTEL_PXP_FW_INTERFACE_42_H__ */

Annotation

• Immediate include surface: `linux/types.h`, `intel_pxp_cmd_interface_cmn.h`.
• Detected declarations: `struct pxp42_create_arb_in`, `struct pxp42_create_arb_out`, `struct pxp42_inv_stream_key_in`, `struct pxp42_inv_stream_key_out`.
• Atlas domain: Driver Families / drivers/gpu.
• 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.