drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/xe/xe_gt_sriov_pf_migration.h

Extension

.h

Size

2293 bytes

Lines

55

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

Detected Declarations

• struct xe_gt
• struct xe_sriov_packet
• enum xe_sriov_packet_type

Annotated Snippet

#ifndef _XE_GT_SRIOV_PF_MIGRATION_H_
#define _XE_GT_SRIOV_PF_MIGRATION_H_

#include <linux/types.h>

struct xe_gt;
struct xe_sriov_packet;
enum xe_sriov_packet_type;

/* TODO: get this information by querying GuC in the future */
#define XE_GT_SRIOV_PF_MIGRATION_GUC_DATA_MAX_SIZE SZ_8M

int xe_gt_sriov_pf_migration_init(struct xe_gt *gt);
int xe_gt_sriov_pf_migration_guc_save(struct xe_gt *gt, unsigned int vfid);
int xe_gt_sriov_pf_migration_guc_restore(struct xe_gt *gt, unsigned int vfid,
					 struct xe_sriov_packet *data);
int xe_gt_sriov_pf_migration_ggtt_save(struct xe_gt *gt, unsigned int vfid);
int xe_gt_sriov_pf_migration_ggtt_restore(struct xe_gt *gt, unsigned int vfid,
					  struct xe_sriov_packet *data);
int xe_gt_sriov_pf_migration_mmio_save(struct xe_gt *gt, unsigned int vfid);
int xe_gt_sriov_pf_migration_mmio_restore(struct xe_gt *gt, unsigned int vfid,
					  struct xe_sriov_packet *data);
int xe_gt_sriov_pf_migration_vram_save(struct xe_gt *gt, unsigned int vfid);
int xe_gt_sriov_pf_migration_vram_restore(struct xe_gt *gt, unsigned int vfid,
					  struct xe_sriov_packet *data);

ssize_t xe_gt_sriov_pf_migration_size(struct xe_gt *gt, unsigned int vfid);

bool xe_gt_sriov_pf_migration_ring_empty(struct xe_gt *gt, unsigned int vfid);
bool xe_gt_sriov_pf_migration_ring_full(struct xe_gt *gt, unsigned int vfid);
void xe_gt_sriov_pf_migration_ring_free(struct xe_gt *gt, unsigned int vfid);

void xe_gt_sriov_pf_migration_save_init(struct xe_gt *gt, unsigned int vfid);
bool xe_gt_sriov_pf_migration_save_data_pending(struct xe_gt *gt, unsigned int vfid,
						enum xe_sriov_packet_type type);
void xe_gt_sriov_pf_migration_save_data_complete(struct xe_gt *gt, unsigned int vfid,
						 enum xe_sriov_packet_type type);

int xe_gt_sriov_pf_migration_save_produce(struct xe_gt *gt, unsigned int vfid,
					  struct xe_sriov_packet *data);
struct xe_sriov_packet *
xe_gt_sriov_pf_migration_restore_consume(struct xe_gt *gt, unsigned int vfid);

int xe_gt_sriov_pf_migration_restore_produce(struct xe_gt *gt, unsigned int vfid,
					     struct xe_sriov_packet *data);
struct xe_sriov_packet *
xe_gt_sriov_pf_migration_save_consume(struct xe_gt *gt, unsigned int vfid);

#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct xe_gt`, `struct xe_sriov_packet`, `enum xe_sriov_packet_type`.
• 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.