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Diffstat (limited to 'drivers/char/ftape/lowlevel/ftape-ecc.h')
-rw-r--r-- | drivers/char/ftape/lowlevel/ftape-ecc.h | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/drivers/char/ftape/lowlevel/ftape-ecc.h b/drivers/char/ftape/lowlevel/ftape-ecc.h deleted file mode 100644 index 4829146fe9a0..000000000000 --- a/drivers/char/ftape/lowlevel/ftape-ecc.h +++ /dev/null | |||
@@ -1,84 +0,0 @@ | |||
1 | #ifndef _FTAPE_ECC_H_ | ||
2 | #define _FTAPE_ECC_H_ | ||
3 | |||
4 | /* | ||
5 | * Copyright (C) 1993 Ning and David Mosberger. | ||
6 | * Original: | ||
7 | * Copyright (C) 1993 Bas Laarhoven. | ||
8 | * Copyright (C) 1992 David L. Brown, Jr. | ||
9 | |||
10 | This program is free software; you can redistribute it and/or | ||
11 | modify it under the terms of the GNU General Public License as | ||
12 | published by the Free Software Foundation; either version 2, or (at | ||
13 | your option) any later version. | ||
14 | |||
15 | This program is distributed in the hope that it will be useful, but | ||
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
18 | General Public License for more details. | ||
19 | |||
20 | You should have received a copy of the GNU General Public License | ||
21 | along with this program; see the file COPYING. If not, write to | ||
22 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, | ||
23 | USA. | ||
24 | |||
25 | * | ||
26 | * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/ftape-ecc.h,v $ | ||
27 | * $Revision: 1.2 $ | ||
28 | * $Date: 1997/10/05 19:18:11 $ | ||
29 | * | ||
30 | * This file contains the definitions for the | ||
31 | * Reed-Solomon error correction code | ||
32 | * for the QIC-40/80 tape streamer device driver. | ||
33 | */ | ||
34 | |||
35 | #include "../lowlevel/ftape-bsm.h" | ||
36 | |||
37 | #define BAD_CLEAR(entry) ((entry)=0) | ||
38 | #define BAD_SET(entry,sector) ((entry)|=(1<<(sector))) | ||
39 | #define BAD_CHECK(entry,sector) ((entry)&(1<<(sector))) | ||
40 | |||
41 | /* | ||
42 | * Return values for ecc_correct_data: | ||
43 | */ | ||
44 | enum { | ||
45 | ECC_OK, /* Data was correct. */ | ||
46 | ECC_CORRECTED, /* Correctable error in data. */ | ||
47 | ECC_FAILED, /* Could not correct data. */ | ||
48 | }; | ||
49 | |||
50 | /* | ||
51 | * Representation of an in memory segment. MARKED_BAD lists the | ||
52 | * sectors that were marked bad during formatting. If the N-th sector | ||
53 | * in a segment is marked bad, bit 1<<N will be set in MARKED_BAD. | ||
54 | * The sectors should be read in from the disk and packed, as if the | ||
55 | * bad sectors were not there, and the segment just contained fewer | ||
56 | * sectors. READ_SECTORS is a bitmap of errors encountered while | ||
57 | * reading the data. These offsets are relative to the packed data. | ||
58 | * BLOCKS is a count of the sectors not marked bad. This is just to | ||
59 | * prevent having to count the zero bits in MARKED_BAD each time this | ||
60 | * is needed. DATA is the actual sector packed data from (or to) the | ||
61 | * tape. | ||
62 | */ | ||
63 | struct memory_segment { | ||
64 | SectorMap marked_bad; | ||
65 | SectorMap read_bad; | ||
66 | int blocks; | ||
67 | __u8 *data; | ||
68 | SectorMap corrected; | ||
69 | }; | ||
70 | |||
71 | /* | ||
72 | * ecc.c defined global variables: | ||
73 | */ | ||
74 | #ifdef TEST | ||
75 | extern int ftape_ecc_tracing; | ||
76 | #endif | ||
77 | |||
78 | /* | ||
79 | * ecc.c defined global functions: | ||
80 | */ | ||
81 | extern int ftape_ecc_correct_data(struct memory_segment *data); | ||
82 | extern int ftape_ecc_set_segment_parity(struct memory_segment *data); | ||
83 | |||
84 | #endif /* _FTAPE_ECC_H_ */ | ||