1. 根目录:
2. arch
3. sparc
4. include
5. asm
6. openpromio.h

#ifndef	_SPARC_OPENPROMIO_H
#define	_SPARC_OPENPROMIO_H

#include <linux/compiler.h>
#include <linux/ioctl.h>
#include <linux/types.h>

/*
 * SunOS and Solaris /dev/openprom definitions. The ioctl values
 * were chosen to be exactly equal to the SunOS equivalents.
 */

struct openpromio
{
	u_int	oprom_size;		/* Actual size of the oprom_array. */
	char	oprom_array[1];		/* Holds property names and values. */
};

#define	OPROMMAXPARAM	4096		/* Maximum size of oprom_array. */

#define	OPROMGETOPT		0x20004F01
#define	OPROMSETOPT		0x20004F02
#define	OPROMNXTOPT		0x20004F03
#define	OPROMSETOPT2		0x20004F04
#define	OPROMNEXT		0x20004F05
#define	OPROMCHILD		0x20004F06
#define	OPROMGETPROP		0x20004F07
#define	OPROMNXTPROP		0x20004F08
#define	OPROMU2P		0x20004F09
#define	OPROMGETCONS		0x20004F0A
#define	OPROMGETFBNAME		0x20004F0B
#define	OPROMGETBOOTARGS	0x20004F0C
/* Linux extensions */				/* Arguments in oprom_array: */
#define OPROMSETCUR		0x20004FF0	/* int node - Sets current node */
#define OPROMPCI2NODE		0x20004FF1	/* int pci_bus, pci_devfn - Sets current node to PCI device's node */
#define OPROMPATH2NODE		0x20004FF2	/* char path[] - Set current node from fully qualified PROM path */

/*
 * Return values from OPROMGETCONS:
 */

#define OPROMCONS_NOT_WSCONS    0
#define OPROMCONS_STDIN_IS_KBD  0x1     /* stdin device is kbd */
#define OPROMCONS_STDOUT_IS_FB  0x2     /* stdout is a framebuffer */
#define OPROMCONS_OPENPROM      0x4     /* supports openboot */


/*
 *  NetBSD/OpenBSD /dev/openprom definitions.
 */

struct opiocdesc
{
	int	op_nodeid;		/* PROM Node ID (value-result) */
	int	op_namelen;		/* Length of op_name. */
	char	__user *op_name;	/* Pointer to the property name. */
	int	op_buflen;		/* Length of op_buf (value-result) */
	char	__user *op_buf;		/* Pointer to buffer. */
};

#define	OPIOCGET	_IOWR('O', 1, struct opiocdesc)
#define	OPIOCSET	_IOW('O', 2, struct opiocdesc)
#define	OPIOCNEXTPROP	_IOWR('O', 3, struct opiocdesc)
#define	OPIOCGETOPTNODE	_IOR('O', 4, int)
#define	OPIOCGETNEXT	_IOWR('O', 5, int)
#define	OPIOCGETCHILD	_IOWR('O', 6, int)

#endif /* _SPARC_OPENPROMIO_H */