arch/sh/drivers/pci/pci-sh4.h

File Facts

System

Linux kernel

Corpus path

arch/sh/drivers/pci/pci-sh4.h

Extension

.h

Size

9591 bytes

Lines

183

Domain

Architecture Layer

Bucket

arch/sh

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

• pci-sh7780.h
• pci-sh7751.h
• asm/io.h

Detected Declarations

• struct sh4_pci_address_space
• struct sh4_pci_address_map
• function pci_write_reg
• function pci_read_reg

Annotated Snippet

struct sh4_pci_address_space {
	unsigned long base;
	unsigned long size;
};

struct sh4_pci_address_map {
	struct sh4_pci_address_space window0;
	struct sh4_pci_address_space window1;
};

static inline void pci_write_reg(struct pci_channel *chan,
				 unsigned long val, unsigned long reg)
{
	__raw_writel(val, chan->reg_base + reg);
}

static inline unsigned long pci_read_reg(struct pci_channel *chan,
					 unsigned long reg)
{
	return __raw_readl(chan->reg_base + reg);
}

#endif /* __PCI_SH4_H */

Annotation

• Immediate include surface: `pci-sh7780.h`, `pci-sh7751.h`, `asm/io.h`.
• Detected declarations: `struct sh4_pci_address_space`, `struct sh4_pci_address_map`, `function pci_write_reg`, `function pci_read_reg`.
• Atlas domain: Architecture Layer / arch/sh.
• 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.