xref: /illumos-gate/usr/src/uts/common/sys/openpromio.h (revision 9cb0a1d4)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright 2019 Peter Tribble.
 */

#ifndef	_SYS_OPENPROMIO_H
#define	_SYS_OPENPROMIO_H

/* From SunOS 4.1.1 <sundev/openpromio.h> */

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * XXX HACK ALERT
 *
 * You might think that this interface could support setting non-ASCII
 * property values.  Unfortunately the 4.0.3c openprom driver SETOPT
 * code ignores oprom_size and uses strlen() to compute the length of
 * the value.  The 4.0.3c openprom eeprom command makes its contribution
 * by not setting oprom_size to anything meaningful.  So, if we want the
 * driver to trust oprom_size we have to use SETOPT2.  XXX.
 */
struct openpromio {
	uint_t	oprom_size;		/* real size of following array */
	union {
		char	b[1];		/* For property names and values */
					/* NB: Adjacent, Null terminated */
		int	i;
	} opio_u;
};

#define	oprom_array	opio_u.b
#define	oprom_node	opio_u.i
#define	oprom_len	opio_u.i

/*
 * OPROMMAXPARAM is used as a limit by the driver, and it has been
 * increased to be 4 times the largest possible size of a property,
 * which is 8K (nvramrc property).
 */
#define	OPROMMAXPARAM	32768		/* max size of array */

/*
 * Note that all OPROM ioctl codes are type void. Since the amount
 * of data copied in/out may (and does) vary, the openprom driver
 * handles the copyin/copyout itself.
 */
#define	OIOC	('O'<<8)
#define	OPROMGETOPT	(OIOC | 1)
#define	OPROMSETOPT	(OIOC | 2)
#define	OPROMNXTOPT	(OIOC | 3)
#define	OPROMSETOPT2	(OIOC | 4)	/* working OPROMSETOPT */
#define	OPROMNEXT	(OIOC | 5)	/* interface to raw config_ops */
#define	OPROMCHILD	(OIOC | 6)	/* interface to raw config_ops */
#define	OPROMGETPROP	(OIOC | 7)	/* interface to raw config_ops */
#define	OPROMNXTPROP	(OIOC | 8)	/* interface to raw config_ops */
#define	OPROMU2P	(OIOC | 9)	/* NOT SUPPORTED after 4.x */
#define	OPROMGETCONS	(OIOC | 10)	/* enquire which console device */
#define	OPROMGETFBNAME	(OIOC | 11)	/* Frame buffer OBP pathname */
#define	OPROMGETBOOTARGS (OIOC | 12)	/* Get boot arguments */
#define	OPROMGETVERSION	(OIOC | 13)	/* Get OpenProm Version string */
#define	OPROMPATH2DRV	(OIOC | 14)	/* Convert prom path to driver name */
#define	OPROMDEV2PROMNAME (OIOC | 15)	/* Convert devfs path to prom path */
#define	OPROMPROM2DEVNAME (OIOC | 16)	/* Convert devfs path to prom path */
#define	OPROMGETPROPLEN	(OIOC | 17)	/* interface to raw config_ops */
#define	OPROMREADY64	(OIOC | 18)	/* DEPRECATED is prom 64-bit ready? */
#define	OPROMSETNODEID	(OIOC | 19)	/* set current node_id */
#define	OPROMSNAPSHOT	(OIOC | 20)	/* create a snapshot */
#define	OPROMCOPYOUT	(OIOC | 21)	/* copyout and free snapshot */
#define	OPROMLISTKEYS	(OIOC | 22)	/* asr-list-keys */
#define	OPROMLISTKEYSLEN (OIOC | 23)	/* asr-list-keys-len */
#define	OPROMEXPORT	(OIOC | 24)	/* asr-export */
#define	OPROMEXPORTLEN	(OIOC | 25)	/* asr-export-len */
#define	OPROMGETBOOTPATH	(OIOC | 26)	/* Get bootpath */

/*
 * 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 */

#ifdef __cplusplus
}
#endif

#endif	/* _SYS_OPENPROMIO_H */