/*
 * 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 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _PARAM_H
#define _PARAM_H

#ifdef  __cplusplus
extern "C" {
#endif

#ifndef UINT16_MAX
#define UINT16_MAX      0xffffU
#endif

#ifndef UINT32_MAX
#define UINT32_MAX      0xffffffffU
#endif

#ifndef INT32_MAX
#define INT32_MAX       0x7fffffff
#endif

/*
 * This file contains declarations of miscellaneous parameters.
 */
#ifndef SECSIZE
#define SECSIZE         DEV_BSIZE
#endif

#define MAX_CYLS        (0x10000 - 1)           /* max legal cylinder count */
#define MAX_HEADS       (0x10000 - 1)           /* max legal head count */
#define MAX_SECTS       (0x10000 - 1)           /* max legal sector count */

#define MIN_RPM         2000                    /* min legal rpm */
#define AVG_RPM         3600                    /* default rpm */
#define MAX_RPM         76000                   /* max legal rpm */

#define MIN_BPS         512                     /* min legal bytes/sector */
#define AVG_BPS         600                     /* default bytes/sector */
#define MAX_BPS         1000                    /* max legal bytes/sector */

#define INFINITY        0xffffffffU             /* a big number */

#define MAXBLKS(heads, spt)     UINT16_MAX * heads * spt, heads, spt
#ifdef  __cplusplus
}
#endif

#endif  /* _PARAM_H */