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19#ifndef _RSLIB_H_
20#define _RSLIB_H_
21
22#include <linux/list.h>
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41struct rs_control {
42 int mm;
43 int nn;
44 uint16_t *alpha_to;
45 uint16_t *index_of;
46 uint16_t *genpoly;
47 int nroots;
48 int fcr;
49 int prim;
50 int iprim;
51 int gfpoly;
52 int (*gffunc)(int);
53 int users;
54 struct list_head list;
55};
56
57
58#ifdef CONFIG_REED_SOLOMON_ENC8
59int encode_rs8(struct rs_control *rs, uint8_t *data, int len, uint16_t *par,
60 uint16_t invmsk);
61#endif
62#ifdef CONFIG_REED_SOLOMON_DEC8
63int decode_rs8(struct rs_control *rs, uint8_t *data, uint16_t *par, int len,
64 uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
65 uint16_t *corr);
66#endif
67
68
69#ifdef CONFIG_REED_SOLOMON_ENC16
70int encode_rs16(struct rs_control *rs, uint16_t *data, int len, uint16_t *par,
71 uint16_t invmsk);
72#endif
73#ifdef CONFIG_REED_SOLOMON_DEC16
74int decode_rs16(struct rs_control *rs, uint16_t *data, uint16_t *par, int len,
75 uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
76 uint16_t *corr);
77#endif
78
79
80struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim,
81 int nroots);
82struct rs_control *init_rs_non_canonical(int symsize, int (*func)(int),
83 int fcr, int prim, int nroots);
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85
86void free_rs(struct rs_control *rs);
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100static inline int rs_modnn(struct rs_control *rs, int x)
101{
102 while (x >= rs->nn) {
103 x -= rs->nn;
104 x = (x >> rs->mm) + (x & rs->nn);
105 }
106 return x;
107}
108
109#endif
110