drivers/accel/ivpu/ivpu_mmu_context.h

File Facts

System

Linux kernel

Corpus path

drivers/accel/ivpu/ivpu_mmu_context.h

Extension

.h

Size

1802 bytes

Lines

53

Domain

Driver Families

Bucket

drivers/accel

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

• drm/drm_mm.h

Detected Declarations

• struct ivpu_device
• struct ivpu_file_priv
• struct ivpu_addr_range
• struct ivpu_mmu_pgtable
• struct ivpu_mmu_context

Annotated Snippet

struct ivpu_mmu_pgtable {
	u64		***pte_ptrs[IVPU_MMU_PGTABLE_ENTRIES];
	u64		**pmd_ptrs[IVPU_MMU_PGTABLE_ENTRIES];
	u64		*pud_ptrs[IVPU_MMU_PGTABLE_ENTRIES];
	u64		*pgd_dma_ptr;
	dma_addr_t	pgd_dma;
};

struct ivpu_mmu_context {
	struct mutex lock; /* Protects: mm, pgtable, is_cd_valid */
	struct drm_mm mm;
	struct ivpu_mmu_pgtable pgtable;
	bool is_cd_valid;
	u32 id;
};

void ivpu_mmu_context_init(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx, u32 context_id);
void ivpu_mmu_context_fini(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx);
void ivpu_mmu_global_context_init(struct ivpu_device *vdev);
void ivpu_mmu_global_context_fini(struct ivpu_device *vdev);
int ivpu_mmu_reserved_context_init(struct ivpu_device *vdev);
void ivpu_mmu_reserved_context_fini(struct ivpu_device *vdev);

int ivpu_mmu_context_insert_node(struct ivpu_mmu_context *ctx, const struct ivpu_addr_range *range,
				 u64 size, struct drm_mm_node *node);
void ivpu_mmu_context_remove_node(struct ivpu_mmu_context *ctx, struct drm_mm_node *node);

int
ivpu_mmu_context_map_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx, u64 vpu_addr,
			 struct sg_table *sgt, size_t bo_size, bool llc_coherent, bool read_only);
void ivpu_mmu_context_unmap_sgt(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
				u64 vpu_addr, struct sg_table *sgt);
int ivpu_mmu_context_set_pages_ro(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
				  u64 vpu_addr, size_t size);

#endif /* __IVPU_MMU_CONTEXT_H__ */

Annotation

• Immediate include surface: `drm/drm_mm.h`.
• Detected declarations: `struct ivpu_device`, `struct ivpu_file_priv`, `struct ivpu_addr_range`, `struct ivpu_mmu_pgtable`, `struct ivpu_mmu_context`.
• Atlas domain: Driver Families / drivers/accel.
• 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.