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Annotation of Gnu-Mach/scsi/rz.h, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * Mach Operating System
                      3:  * Copyright (c) 1991,1990 Carnegie Mellon University
                      4:  * All Rights Reserved.
                      5:  * 
                      6:  * Permission to use, copy, modify and distribute this software and its
                      7:  * documentation is hereby granted, provided that both the copyright
                      8:  * notice and this permission notice appear in all copies of the
                      9:  * software, derivative works or modified versions, and any portions
                     10:  * thereof, and that both notices appear in supporting documentation.
                     11:  * 
                     12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     15:  * 
                     16:  * Carnegie Mellon requests users of this software to return to
                     17:  * 
                     18:  *  Software Distribution Coordinator  or  [email protected]
                     19:  *  School of Computer Science
                     20:  *  Carnegie Mellon University
                     21:  *  Pittsburgh PA 15213-3890
                     22:  * 
                     23:  * any improvements or extensions that they make and grant Carnegie Mellon
                     24:  * the rights to redistribute these changes.
                     25:  */
                     26: /*
                     27:  *     File: rz.h
                     28:  *     Author: Alessandro Forin, Carnegie Mellon University
                     29:  *     Date:   9/90
                     30:  *
                     31:  *     Mapping between U*x-like indexing and controller+slave
                     32:  *     Each controller handles at most 8 slaves, few controllers.
                     33:  */
                     34: 
                     35: #if 0
                     36: #define        rzcontroller(dev)       (((dev)>>6)&0x3)
                     37: #define        rzslave(dev)            (((dev)>>3)&0x7)
                     38: #endif 0
                     39: #define        rzcontroller(dev)       (((dev)>>13)&0x3)
                     40: #define rzslave(dev)           (((dev)>>10)&0x7)
                     41: 
                     42: #if 0
                     43: #define        rzpartition(dev)        ((PARTITION_TYPE(dev)==0xf)?MAXPARTITIONS:((dev)&0x7))
                     44: #endif 0
                     45: #define rzpartition(dev)       ((dev)&0x3ff)
                     46: 
                     47: /* To address the full 256 luns use upper bits 8..12 */
                     48: /* NOTE: Under U*x this means the next major up.. what a mess */
                     49: #define rzlun(dev)             (((dev)&0x7) | (((dev)>>5)&0xf8))
                     50: 
                     51: /* note: whatever this was used for is no longer cared about -- Kevin */
                     52: #define PARTITION_TYPE(dev)    (((dev)>>24)&0xf)
                     53: #define PARTITION_ABSOLUTE     (0xf<<24)
                     54: 
                     55: #ifdef MACH_KERNEL
                     56: #else  /*MACH_KERNEL*/
                     57: #define tape_unit(dev)         ((((dev)&0xe0)>>3)|((dev)&0x3))
                     58: #define        TAPE_UNIT(dev)          ((dev)&(~0xff))|(tape_unit((dev))<<3)
                     59: #define        TAPE_REWINDS(dev)       (((dev)&0x1c)==0)||(((dev)&0x1c)==8)
                     60: #endif /*MACH_KERNEL*/

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