arch/arm/include/asm/pci.h

File Facts

System

Linux kernel

Corpus path

arch/arm/include/asm/pci.h

Extension

.h

Size

687 bytes

Lines

29

Domain

Architecture Layer

Bucket

arch/arm

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

• asm/mach/pci.h

Detected Declarations

• function pci_proc_domain

Annotated Snippet

#ifndef ASMARM_PCI_H
#define ASMARM_PCI_H

#ifdef __KERNEL__
#include <asm/mach/pci.h> /* for pci_sys_data */

extern unsigned long pcibios_min_io;
#define PCIBIOS_MIN_IO pcibios_min_io
extern unsigned long pcibios_min_mem;
#define PCIBIOS_MIN_MEM pcibios_min_mem

#define pcibios_assign_all_busses()	pci_has_flag(PCI_REASSIGN_ALL_BUS)

#ifdef CONFIG_PCI_DOMAINS
static inline int pci_proc_domain(struct pci_bus *bus)
{
	return pci_domain_nr(bus);
}
#endif /* CONFIG_PCI_DOMAINS */

#define HAVE_PCI_MMAP
#define ARCH_GENERIC_PCI_MMAP_RESOURCE

extern void pcibios_report_status(unsigned int status_mask, int warn);

#endif /* __KERNEL__ */
#endif

Annotation

• Immediate include surface: `asm/mach/pci.h`.
• Detected declarations: `function pci_proc_domain`.
• Atlas domain: Architecture Layer / arch/arm.
• 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.