include/linux/libps2.h

File Facts

System

Linux kernel

Corpus path

include/linux/libps2.h

Extension

.h

Size

2529 bytes

Lines

76

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bitops.h
• linux/interrupt.h
• linux/mutex.h
• linux/types.h
• linux/wait.h

Detected Declarations

• struct ps2dev
• struct ps2dev
• enum ps2_disposition

Annotated Snippet

struct ps2dev {
	struct serio *serio;
	struct mutex cmd_mutex;
	wait_queue_head_t wait;
	unsigned long flags;
	u8 cmdbuf[8];
	u8 cmdcnt;
	u8 nak;

	ps2_pre_receive_handler_t pre_receive_handler;
	ps2_receive_handler_t receive_handler;
};

void ps2_init(struct ps2dev *ps2dev, struct serio *serio,
	      ps2_pre_receive_handler_t pre_receive_handler,
	      ps2_receive_handler_t receive_handler);
int ps2_sendbyte(struct ps2dev *ps2dev, u8 byte, unsigned int timeout);
void ps2_drain(struct ps2dev *ps2dev, size_t maxbytes, unsigned int timeout);
void ps2_begin_command(struct ps2dev *ps2dev);
void ps2_end_command(struct ps2dev *ps2dev);
int __ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command);
int ps2_command(struct ps2dev *ps2dev, u8 *param, unsigned int command);
int ps2_sliced_command(struct ps2dev *ps2dev, u8 command);
bool ps2_is_keyboard_id(u8 id);

irqreturn_t ps2_interrupt(struct serio *serio, u8 data, unsigned int flags);

#endif /* _LIBPS2_H */

Annotation

• Immediate include surface: `linux/bitops.h`, `linux/interrupt.h`, `linux/mutex.h`, `linux/types.h`, `linux/wait.h`.
• Detected declarations: `struct ps2dev`, `struct ps2dev`, `enum ps2_disposition`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.