arch/s390/include/asm/pci_dma.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/pci_dma.h

Extension

.h

Size

3119 bytes

Lines

101

Domain

Architecture Layer

Bucket

arch/s390

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

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

Detected Declarations

• struct zpci_iommu_ctrs
• struct zpci_dev
• enum zpci_ioat_dtype

Annotated Snippet

struct zpci_iommu_ctrs {
	atomic64_t		mapped_pages;
	atomic64_t		unmapped_pages;
	atomic64_t		global_rpcits;
	atomic64_t		sync_map_rpcits;
	atomic64_t		sync_rpcits;
};

struct zpci_dev;

struct zpci_iommu_ctrs *zpci_get_iommu_ctrs(struct zpci_dev *zdev);

#endif

Annotation

• Detected declarations: `struct zpci_iommu_ctrs`, `struct zpci_dev`, `enum zpci_ioat_dtype`.
• Atlas domain: Architecture Layer / arch/s390.
• 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.