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| Rev | Author | Line No. | Line |
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| 422 | giacomo | 1 | #ifndef _ZFTAPE_H |
| 2 | #define _ZFTAPE_H |
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| 3 | |||
| 4 | /* |
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| 5 | * Copyright (C) 1996, 1997 Claus-Justus Heine. |
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| 6 | |||
| 7 | This program is free software; you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation; either version 2, or (at your option) |
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| 10 | any later version. |
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| 11 | |||
| 12 | This program is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |||
| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with this program; see the file COPYING. If not, write to |
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| 19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 20 | |||
| 21 | * |
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| 22 | * $Source: /home/fabio/w/shark/sharkcvs/CVSROOT/shark/drivers/linuxc26/include/linux/zftape.h,v $ |
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| 23 | * $Revision: 1.1 $ |
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| 24 | * $Date: 2004-01-28 15:27:05 $ |
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| 25 | * |
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| 26 | * Special ioctl and other global info for the zftape VFS |
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| 27 | * interface for the QIC-40/80/3010/3020 floppy-tape driver for |
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| 28 | * Linux. |
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| 29 | */ |
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| 30 | |||
| 31 | #define ZFTAPE_VERSION "zftape for " FTAPE_VERSION |
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| 32 | |||
| 33 | #include <linux/ftape.h> |
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| 34 | |||
| 35 | #define ZFTAPE_LABEL "Ftape - The Linux Floppy Tape Project!" |
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| 36 | |||
| 37 | /* Bits of the minor device number that control the operation mode */ |
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| 38 | #define ZFT_Q80_MODE (1 << 3) |
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| 39 | #define ZFT_ZIP_MODE (1 << 4) |
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| 40 | #define ZFT_RAW_MODE (1 << 5) |
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| 41 | #define ZFT_MINOR_OP_MASK (ZFT_Q80_MODE | \ |
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| 42 | ZFT_ZIP_MODE | \ |
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| 43 | ZFT_RAW_MODE) |
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| 44 | #define ZFT_MINOR_MASK (FTAPE_SEL_MASK | \ |
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| 45 | ZFT_MINOR_OP_MASK | \ |
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| 46 | FTAPE_NO_REWIND) |
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| 47 | |||
| 48 | #ifdef ZFT_OBSOLETE |
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| 49 | struct mtblksz { |
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| 50 | unsigned int mt_blksz; |
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| 51 | }; |
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| 52 | #define MTIOC_ZFTAPE_GETBLKSZ _IOR('m', 104, struct mtblksz) |
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| 53 | #endif |
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| 54 | |||
| 55 | #ifdef __KERNEL__ |
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| 56 | |||
| 57 | extern int zft_init(void); |
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| 58 | |||
| 59 | static inline __s64 zft_div_blksz(__s64 value, __u32 blk_sz) |
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| 60 | { |
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| 61 | if (blk_sz == 1) { |
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| 62 | return value; |
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| 63 | } else { |
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| 64 | return (__s64)(((__u32)(value >> 10) + (blk_sz >> 10) - 1) |
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| 65 | / (blk_sz >> 10)); |
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| 66 | } |
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| 67 | } |
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| 68 | |||
| 69 | static inline __s64 zft_mul_blksz(__s64 value, __u32 blk_sz) |
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| 70 | { |
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| 71 | if (blk_sz == 1) { |
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| 72 | return value; |
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| 73 | } else { |
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| 74 | /* if blk_sz != 1, then it is a multiple of 1024. In |
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| 75 | * this case, `value' will also fit into 32 bits. |
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| 76 | * |
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| 77 | * Actually, this limits the capacity to 42 |
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| 78 | * bits. This is (2^32)*1024, roughly a thousand |
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| 79 | * times 2GB, or 3 Terabytes. Hopefully this is enough |
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| 80 | */ |
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| 81 | return(__s64)(((__u32)(value)*(blk_sz>>10))<<10); |
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| 82 | } |
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| 83 | } |
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| 84 | |||
| 85 | #endif |
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| 86 | |||
| 87 | #endif |