diff options
Diffstat (limited to 'drivers/char/ftape/zftape/zftape-rw.h')
| -rw-r--r-- | drivers/char/ftape/zftape/zftape-rw.h | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/drivers/char/ftape/zftape/zftape-rw.h b/drivers/char/ftape/zftape/zftape-rw.h deleted file mode 100644 index 1ceec22b60bd7f..00000000000000 --- a/drivers/char/ftape/zftape/zftape-rw.h +++ /dev/null @@ -1,101 +0,0 @@ -#ifndef _ZFTAPE_RW_H -#define _ZFTAPE_RW_H - -/* - * Copyright (C) 1996, 1997 Claus-Justus Heine. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; see the file COPYING. If not, write to - the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - - * - * $Source: /homes/cvs/ftape-stacked/ftape/zftape/zftape-rw.h,v $ - * $Revision: 1.2 $ - * $Date: 1997/10/05 19:19:09 $ - * - * This file contains the definitions for the read and write - * functions for the QIC-117 floppy-tape driver for Linux. - * - */ - -#include "../zftape/zftape-buffers.h" - -#define SEGMENTS_PER_TAPE (ft_segments_per_track * ft_tracks_per_tape) - -/* QIC-113 Rev. G says that `a maximum of 63488 raw bytes may be - * compressed into a single frame'. - * Maybe we should stick to 32kb to make it more `beautiful' - */ -#define ZFT_MAX_BLK_SZ (62*1024) /* bytes */ -#if !defined(CONFIG_ZFT_DFLT_BLK_SZ) -# define CONFIG_ZFT_DFLT_BLK_SZ (10*1024) /* bytes, default of gnu tar */ -#elif CONFIG_ZFT_DFLT_BLK_SZ == 0 -# undef CONFIG_ZFT_DFLT_BLK_SZ -# define CONFIG_ZFT_DFLT_BLK_SZ 1 -#elif (CONFIG_ZFT_DFLT_BLK_SZ % 1024) != 0 -# error CONFIG_ZFT_DFLT_BLK_SZ must be 1 or a multiple of 1024 -#endif -/* The *optional* compression routines need some overhead per tape - * block for their purposes. Instead of asking the actual compression - * implementation how much it needs, we restrict this overhead to be - * maximal of ZFT_CMPT_OVERHEAD size. We need this for EOT - * conditions. The tape is assumed to be logical at EOT when the - * distance from the physical EOT is less than - * one tape block + ZFT_CMPR_OVERHEAD - */ -#define ZFT_CMPR_OVERHEAD 16 /* bytes */ - -typedef enum -{ - zft_idle = 0, - zft_reading, - zft_writing, -} zft_status_enum; - -typedef struct /* all values measured in bytes */ -{ - int seg_pos; /* segment currently positioned at */ - int seg_byte_pos; /* offset in current segment */ - __s64 tape_pos; /* real offset from BOT */ - __s64 volume_pos; /* pos. in uncompressed data stream in - * current volume - */ -} zft_position; - -extern zft_position zft_pos; -extern __u8 *zft_deblock_buf; -extern __u8 *zft_hseg_buf; -extern int zft_deblock_segment; -extern zft_status_enum zft_io_state; -extern int zft_header_changed; -extern int zft_qic113; /* conform to old specs. and old zftape */ -extern int zft_use_compression; -extern unsigned int zft_blk_sz; -extern __s64 zft_capacity; -extern unsigned int zft_written_segments; -extern int zft_label_changed; - -/* zftape-rw.c exported functions - */ -extern unsigned int zft_get_seg_sz(unsigned int segment); -extern void zft_set_flags(unsigned int minor_unit); -extern int zft_calc_seg_byte_coord(int *seg_byte_pos, __s64 tape_pos); -extern __s64 zft_calc_tape_pos(int segment); -extern __s64 zft_get_capacity(void); -extern void zft_update_label(__u8 *buffer); -extern int zft_erase(void); -extern int zft_verify_write_segments(unsigned int segment, - __u8 *data, size_t size, __u8 *buffer); -extern unsigned int zft_get_time(void); -#endif /* _ZFTAPE_RW_H */ - |