arch/powerpc/include/uapi/asm/papr-indices.h

Source file repositories/reference/linux-study-clean/arch/powerpc/include/uapi/asm/papr-indices.h

File Facts

System
Linux kernel
Corpus path
arch/powerpc/include/uapi/asm/papr-indices.h
Extension
.h
Size
1294 bytes
Lines
42
Domain
Architecture Layer
Bucket
arch/powerpc
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct papr_indices_io_block {
	union {
		struct {
			__u8 is_sensor; /* 0 for indicator and 1 for sensor */
			__u32 indice_type;
		} indices;
		struct {
			__u32 token; /* Sensor or indicator token */
			__u32 state; /* get / set state */
			/*
			 * PAPR+ 12.3.2.4 Converged Location Code Rules - Length
			 * Restrictions. 79 characters plus null.
			 */
			char location_code_str[LOC_CODE_SIZE]; /* location code */
		} dynamic_param;
	};
};

/*
 * ioctls for /dev/papr-indices.
 * PAPR_INDICES_IOC_GET: Returns a get-indices handle fd to read data
 * PAPR_DYNAMIC_SENSOR_IOC_GET: Gets the state of the input sensor
 * PAPR_DYNAMIC_INDICATOR_IOC_SET: Sets the new state for the input indicator
 */
#define PAPR_INDICES_IOC_GET		_IOW(PAPR_MISCDEV_IOC_ID, 3, struct papr_indices_io_block)
#define PAPR_DYNAMIC_SENSOR_IOC_GET	_IOWR(PAPR_MISCDEV_IOC_ID, 4, struct papr_indices_io_block)
#define PAPR_DYNAMIC_INDICATOR_IOC_SET	_IOW(PAPR_MISCDEV_IOC_ID, 5, struct papr_indices_io_block)


#endif /* _UAPI_PAPR_INDICES_H_ */

Annotation

Implementation Notes