arch/m68k/include/asm/mac_oss.h

File Facts

System

Linux kernel

Corpus path

arch/m68k/include/asm/mac_oss.h

Extension

.h

Size

1875 bytes

Lines

81

Domain

Architecture Layer

Bucket

arch/m68k

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 mac_oss

Annotated Snippet

struct mac_oss {
    __u8  irq_level[0x10];	/* [0x000-0x00f] Interrupt levels */
    __u8  padding0[0x1F2];	/* [0x010-0x201] IO space filler */
    __u16 irq_pending;		/* [0x202-0x203] pending interrupts bits */
    __u8  rom_ctrl;		/* [0x204-0x204] ROM cntl reg (for poweroff) */
    __u8  padding1[0x2];	/* [0x205-0x206] currently unused by A/UX */
    __u8  ack_60hz;		/* [0x207-0x207] 60 Hz ack. */
};

extern volatile struct mac_oss *oss;
extern int oss_present;

extern void oss_register_interrupts(void);
extern void oss_irq_enable(int);
extern void oss_irq_disable(int);

#endif /* __ASSEMBLER__ */

Annotation

• Detected declarations: `struct mac_oss`.
• Atlas domain: Architecture Layer / arch/m68k.
• 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.