sys/sys/chio.h

/*
 * 16 Feb 93    Julian Elischer         ADDED for SCSI system
 *
 *      $Id$
 */

/* This is a "convertet" mtio.h from 386BSD
   Stefan Grefen grefen@goofy.zdv.uni-mainz.de
 */

/*
 * Structures and definitions for changer io control commands
 */
#ifndef _CHIO_H_
#define _CHIO_H_

#define CH_INVERT               0x10000
#define CH_ADDR_MASK            0xffff
struct chop {
        short   ch_op;          /* operations defined below */
        short   result;         /* The result               */
        union {
           struct {
                int chm;                /* Transport element */
                int from;
                int to;
           } move;
           struct {
                int chm;                /* Transport element */
                int to;
           } position;
           struct {
                short   chmo;                   /* Offset of first CHM */
                short   chms;                   /* No. of CHM */
                short   slots;                  /* No. of Storage Elements */
                short   sloto;                  /* Offset of first SE */
                short   imexs;                  /* No. of Import/Export Slots */
                short   imexo;                  /* Offset of first IM/EX */
                short   drives;                 /* No. of CTS */
                short   driveo;                 /* Offset of first CTS */
                short   rot;                    /* CHM can rotate */
           } getparam;
           struct {
                int type;
#define CH_CHM  1
#define CH_STOR 2
#define CH_IMEX 3
#define CH_CTS  4
                int from;
                struct {
                        u_char elema_1;
                        u_char elema_0;
                        u_char full:1;
                        u_char rsvd:1;
                        u_char except:1;
                        u_char :5;
                        u_char rsvd2;
                        union {
                                struct {
                                u_char add_sense_code;
                                u_char add_sense_code_qualifier;
                                } specs;
                                short add_sense;
/* WARINING LSB only */
#define CH_CHOLDER      0x0290  /* Cartridge holder is missing */
#define CH_STATUSQ      0x0390  /* Status is questionable */
#define CH_CTS_CLOSED   0x0490  /* CTS door is closed */

                        } ch_add_sense;
                        u_char rsvd3[3];
                        u_char :6;
                        u_char invert:1;
                        u_char svalid:1;
                        u_char source_1;
                        u_char source_0;
                        u_char rsvd4[4];
                        } elem_data;
                } get_elem_stat;
        } u;
};

/* operations */
#define CHMOVE                          1
#define CHPOSITION                      2
#define CHGETPARAM                      3
#define CHGETELEM                       4


/* Changer IO control command */
#define CHIOOP  _IOWR('c', 1, struct chop)      /* do a mag tape op */
#endif