drivers/char/ftape/lowlevel/ftape-ctl.h

   1 #ifndef _FTAPE_CTL_H
   2 #define _FTAPE_CTL_H
   3
   4 /*
   5  * Copyright (C) 1993-1996 Bas Laarhoven,
   6  *           (C) 1996-1997 Claus-Justus Heine.
   7
   8  This program is free software; you can redistribute it and/or modify
   9  it under the terms of the GNU General Public License as published by
  10  the Free Software Foundation; either version 2, or (at your option)
  11  any later version.
  12
  13  This program is distributed in the hope that it will be useful,
  14  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  GNU General Public License for more details.
  17
  18  You should have received a copy of the GNU General Public License
  19  along with this program; see the file COPYING.  If not, write to
  20  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22  *
  23  * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/ftape-ctl.h,v $
  24  * $Revision: 1.2 $
  25  * $Date: 1997/10/05 19:18:09 $
  26  *
  27  *      This file contains the non-standard IOCTL related definitions
  28  *      for the QIC-40/80/3010/3020 floppy-tape driver "ftape" for
  29  *      Linux.
  30  */
  31
  32 #include <linux/ioctl.h>
  33 #include <linux/mtio.h>
  34 #include <linux/ftape-vendors.h>
  35
  36 #include "../lowlevel/ftape-rw.h"
  37 #include <linux/ftape-header-segment.h>
  38
  39 typedef struct {
  40         int used;               /* any reading or writing done */
  41         /* isr statistics */
  42         unsigned int id_am_errors;      /* id address mark not found */
  43         unsigned int id_crc_errors;     /* crc error in id address mark */
  44         unsigned int data_am_errors;    /* data address mark not found */
  45         unsigned int data_crc_errors;   /* crc error in data field */
  46         unsigned int overrun_errors;    /* fdc access timing problem */
  47         unsigned int no_data_errors;    /* sector not found */
  48         unsigned int retries;   /* number of tape retries */
  49         /* ecc statistics */
  50         unsigned int crc_errors;        /* crc error in data */
  51         unsigned int crc_failures;      /* bad data without crc error */
  52         unsigned int ecc_failures;      /* failed to correct */
  53         unsigned int corrected; /* total sectors corrected */
  54         /* general statistics */
  55         unsigned int rewinds;   /* number of tape rewinds */
  56         unsigned int defects;   /* bad sectors due to media defects */
  57 } history_record;
  58
  59 /* this structure contains * ALL * information that we want
  60  * our child modules to know about, but don't want them to
  61  * modify.
  62  */
  63 typedef struct {
  64         /*  vendor information */
  65         vendor_struct fti_drive_type;
  66         /*  data rates */
  67         unsigned int fti_used_data_rate;
  68         unsigned int fti_drive_max_rate;
  69         unsigned int fti_fdc_max_rate;
  70         /*  drive selection, either FTAPE_SEL_A/B/C/D */
  71         int fti_drive_sel;
  72         /*  flags set after decode the drive and tape status   */
  73         unsigned int fti_formatted      :1;
  74         unsigned int fti_no_tape        :1;
  75         unsigned int fti_write_protected:1;
  76         unsigned int fti_new_tape       :1;
  77         /*  values of last queried drive/tape status and error */
  78         ft_drive_error  fti_last_error;
  79         ft_drive_status fti_last_status;
  80         /*  cartridge geometry */
  81         unsigned int fti_tracks_per_tape;
  82         unsigned int fti_segments_per_track;
  83         /*  location of header segments, etc. */
  84         int fti_used_header_segment;
  85         int fti_header_segment_1;
  86         int fti_header_segment_2;
  87         int fti_first_data_segment;
  88         int fti_last_data_segment;
  89         /*  the format code as stored in the header segment  */
  90         ft_format_type  fti_format_code;
  91         /*  the following is the sole reason for the ftape_set_status() call */
  92         unsigned int fti_qic_std;
  93         /*  is tape running? */
  94         volatile enum runner_status_enum fti_runner_status;
  95         /*  is tape reading/writing/verifying/formatting/deleting */
  96         buffer_state_enum fti_state;
  97         /*  flags fatal hardware error */
  98         unsigned int fti_failure:1;
  99         /*  history record */
 100         history_record fti_history;
 101 } ftape_info;
 102
 103 /* vendor information */
 104 #define ft_drive_type          ftape_status.fti_drive_type
 105 /*  data rates */
 106 #define ft_data_rate           ftape_status.fti_used_data_rate
 107 #define ft_drive_max_rate      ftape_status.fti_drive_max_rate
 108 #define ft_fdc_max_rate        ftape_status.fti_fdc_max_rate
 109 /*  drive selection, either FTAPE_SEL_A/B/C/D */
 110 #define ft_drive_sel           ftape_status.fti_drive_sel
 111 /*  flags set after decode the drive and tape status   */
 112 #define ft_formatted           ftape_status.fti_formatted
 113 #define ft_no_tape             ftape_status.fti_no_tape
 114 #define ft_write_protected     ftape_status.fti_write_protected
 115 #define ft_new_tape            ftape_status.fti_new_tape
 116 /*  values of last queried drive/tape status and error */
 117 #define ft_last_error          ftape_status.fti_last_error
 118 #define ft_last_status         ftape_status.fti_last_status
 119 /*  cartridge geometry */
 120 #define ft_tracks_per_tape     ftape_status.fti_tracks_per_tape
 121 #define ft_segments_per_track  ftape_status.fti_segments_per_track
 122 /*  the format code as stored in the header segment  */
 123 #define ft_format_code         ftape_status.fti_format_code
 124 /*  the qic status as returned by report drive configuration */
 125 #define ft_qic_std             ftape_status.fti_qic_std
 126 #define ft_used_header_segment ftape_status.fti_used_header_segment
 127 #define ft_header_segment_1    ftape_status.fti_header_segment_1
 128 #define ft_header_segment_2    ftape_status.fti_header_segment_2
 129 #define ft_first_data_segment  ftape_status.fti_first_data_segment
 130 #define ft_last_data_segment   ftape_status.fti_last_data_segment
 131 /*  is tape running? */
 132 #define ft_runner_status       ftape_status.fti_runner_status
 133 /*  is tape reading/writing/verifying/formatting/deleting */
 134 #define ft_driver_state        ftape_status.fti_state
 135 /*  flags fatal hardware error */
 136 #define ft_failure             ftape_status.fti_failure
 137 /*  history record */
 138 #define ft_history             ftape_status.fti_history
 139
 140 /*
 141  *      ftape-ctl.c defined global vars.
 142  */
 143 extern ftape_info ftape_status;
 144 extern int ftape_segments_per_head;
 145 extern int ftape_segments_per_cylinder;
 146 extern int ftape_init_drive_needed;
 147
 148 /*
 149  *      ftape-ctl.c defined global functions.
 150  */
 151 extern int  ftape_mmap(struct vm_area_struct *vma);
 152 extern int  ftape_enable(int drive_selection);
 153 extern void ftape_disable(void);
 154 extern int  ftape_seek_to_bot(void);
 155 extern int  ftape_seek_to_eot(void);
 156 extern int  ftape_abort_operation(void);
 157 extern void ftape_calc_timeouts(unsigned int qic_std,
 158                                  unsigned int data_rate,
 159                                  unsigned int tape_len);
 160 extern int  ftape_calibrate_data_rate(unsigned int qic_std);
 161 extern const ftape_info *ftape_get_status(void);
 162 #endif