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- /*
- * Mach Operating System
- * Copyright (c) 1991,1990 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- /*
- * Author: David B. Golub, Carnegie Mellon University
- * Date: 7/90
- */
- #ifndef _DEVICE_PARAM_H_
- #define _DEVICE_PARAM_H_
- /*
- * Compatibility definitions for disk IO.
- */
- /*
- * Disk devices do all IO in 512-byte blocks.
- */
- #define DEV_BSIZE 512
- /*
- * Conversion between bytes and disk blocks.
- */
- #define btodb(byte_offset) ((byte_offset) >> 9)
- #define dbtob(block_number) ((block_number) << 9)
- #endif /* _DEVICE_PARAM_H_ */
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