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FreeBSD/Linux Kernel Cross Reference
sys/sqtsec/sec_ctl.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1991 Carnegie Mellon University
    4  * Copyright (c) 1991 Sequent Computer Systems
    5  * All Rights Reserved.
    6  * 
    7  * Permission to use, copy, modify and distribute this software and its
    8  * documentation is hereby granted, provided that both the copyright
    9  * notice and this permission notice appear in all copies of the
   10  * software, derivative works or modified versions, and any portions
   11  * thereof, and that both notices appear in supporting documentation.
   12  * 
   13  * CARNEGIE MELLON AND SEQUENT COMPUTER SYSTEMS ALLOW FREE USE OF
   14  * THIS SOFTWARE IN ITS "AS IS" CONDITION.  CARNEGIE MELLON AND
   15  * SEQUENT COMPUTER SYSTEMS DISCLAIM ANY LIABILITY OF ANY KIND FOR
   16  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   17  * 
   18  * Carnegie Mellon requests users of this software to return to
   19  * 
   20  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   21  *  School of Computer Science
   22  *  Carnegie Mellon University
   23  *  Pittsburgh PA 15213-3890
   24  * 
   25  * any improvements or extensions that they make and grant Carnegie Mellon 
   26  * the rights to redistribute these changes.
   27  */
   28 
   29 /*
   30  * HISTORY
   31  * $Log:        sec_ctl.h,v $
   32  * Revision 2.3  91/07/31  18:07:47  dbg
   33  *      Changed copyright.
   34  *      [91/07/31            dbg]
   35  * 
   36  * Revision 2.2  91/05/08  13:07:32  dbg
   37  *      Added, from Sequent SYMMETRY sources.
   38  *      [91/02/26            dbg]
   39  * 
   40  */
   41 
   42 /*
   43  * $Header: sec_ctl.h,v 2.3 91/07/31 18:07:47 dbg Exp $
   44  */
   45 
   46 /*
   47  * sec_ctl.h
   48  *      Definitions of the common structures used by SCSI/Ether drivers.
   49  */
   50 
   51 /*
   52  * Revision 1.1  89/07/05  13:20:16  kak
   53  * Initial revision
   54  * 
   55  */
   56 
   57 #ifndef _SQT_SEC_CTL_H_
   58 #define _SQT_SEC_CTL_H_
   59 
   60 /*
   61  * struct sed_dc - structure to maintain the queue's with the macros
   62  * below.
   63  */
   64 struct seddc {
   65         /*
   66          * device program management.
   67          */
   68         struct  sec_cib *dc_cib;                /* cib ptr */
   69         struct  sec_progq *dc_diq;              /* diq ptr */
   70         struct  sec_progq *dc_doq;              /* doq ptr */
   71         int     dc_dsz;                 /* doq size */
   72         int     dc_dp;                  /* number of device programs */
   73         int     dc_dfree;
   74         struct  sec_dev_prog *dc_devp;  /* head of the device program ring */
   75         struct  sec_dev_prog *dc_sense; /* aux device program for sense info */
   76         /*
   77          * iat management.
   78          */
   79         struct  sec_iat *dc_iat;        /* Start of iats */
   80         struct  sec_iat *dc_istart;     /* current useable iat ring position */
   81         int     dc_isz;                 /* iat ring size */
   82         int     dc_ihead;               /* iat head */
   83         int     dc_itail;               /* iat tail */
   84         int     dc_ifree;               /* current ring allocation */
   85 };
   86 
   87 #endif  /* _SQT_SEC_CTL_H_ */

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