arch/sh/include/mach-landisk/mach/gio.h

Source file repositories/reference/linux-study-clean/arch/sh/include/mach-landisk/mach/gio.h

File Facts

System
Linux kernel
Corpus path
arch/sh/include/mach-landisk/mach/gio.h
Extension
.h
Size
1295 bytes
Lines
39
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_SH_LANDISK_GIO_H
#define __ASM_SH_LANDISK_GIO_H

#include <linux/ioctl.h>

/* version */
#define VERSION_STR	"1.00"

/* Driver name */
#define GIO_DRIVER_NAME		"/dev/giodrv"

/* Use 'k' as magic number */
#define GIODRV_IOC_MAGIC  'k'

#define GIODRV_IOCRESET    _IO(GIODRV_IOC_MAGIC, 0)
/*
 * S means "Set" through a ptr,
 * T means "Tell" directly
 * G means "Get" (to a pointed var)
 * Q means "Query", response is on the return value
 * X means "eXchange": G and S atomically
 * H means "sHift": T and Q atomically
 */
#define GIODRV_IOCSGIODATA1   _IOW(GIODRV_IOC_MAGIC,  1, unsigned char *)
#define GIODRV_IOCGGIODATA1   _IOR(GIODRV_IOC_MAGIC,  2, unsigned char *)
#define GIODRV_IOCSGIODATA2   _IOW(GIODRV_IOC_MAGIC,  3, unsigned short *)
#define GIODRV_IOCGGIODATA2   _IOR(GIODRV_IOC_MAGIC,  4, unsigned short *)
#define GIODRV_IOCSGIODATA4   _IOW(GIODRV_IOC_MAGIC,  5, unsigned long *)
#define GIODRV_IOCGGIODATA4   _IOR(GIODRV_IOC_MAGIC,  6, unsigned long *)
#define GIODRV_IOCSGIOSETADDR _IOW(GIODRV_IOC_MAGIC,  7, unsigned long *)
#define GIODRV_IOCHARDRESET   _IO(GIODRV_IOC_MAGIC, 8) /* debugging tool */
#define GIODRV_IOC_MAXNR 8

#define GIO_READ 0x00000000
#define GIO_WRITE 0x00000001

#endif /* __ASM_SH_LANDISK_GIO_H  */

Annotation

Implementation Notes