/*
 * Generic binary BCH encoding/decoding library
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * 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; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Copyright © 2011 Parrot S.A.
 *
 * Author: Ivan Djelic <ivan.djelic@parrot.com>
 *
 * Description:
 *
 * This library provides runtime configurable encoding/decoding of binary
 * Bose-Chaudhuri-Hocquenghem (BCH) codes.
*/
#ifndef _BCH_H
#define _BCH_H

#include <linux/types.h>

/**
 * struct bch_control - BCH control structure
 * @m:          Galois field order
 * @n:          maximum codeword size in bits (= 2^m-1)
 * @t:          error correction capability in bits
 * @ecc_bits:   ecc exact size in bits, i.e. generator polynomial degree (<=m*t)
 * @ecc_bytes:  ecc max size (m*t bits) in bytes
 * @a_pow_tab:  Galois field GF(2^m) exponentiation lookup table
 * @a_log_tab:  Galois field GF(2^m) log lookup table
 * @mod8_tab:   remainder generator polynomial lookup tables
 * @ecc_buf:    ecc parity words buffer
 * @ecc_buf2:   ecc parity words buffer
 * @xi_tab:     GF(2^m) base for solving degree 2 polynomial roots
 * @syn:        syndrome buffer
 * @cache:      log-based polynomial representation buffer
 * @elp:        error locator polynomial
 * @poly_2t:    temporary polynomials of degree 2t
 */
struct bch_control {
	unsigned int    m;
	unsigned int    n;
	unsigned int    t;
	unsigned int    ecc_bits;
	unsigned int    ecc_bytes;
/* private: */
	uint16_t       *a_pow_tab;
	uint16_t       *a_log_tab;
	uint32_t       *mod8_tab;
	uint32_t       *ecc_buf;
	uint32_t       *ecc_buf2;
	unsigned int   *xi_tab;
	unsigned int   *syn;
	int            *cache;
	struct gf_poly *elp;
	struct gf_poly *poly_2t[4];
};

struct bch_control *init_bch(int m, int t, unsigned int prim_poly);

void free_bch(struct bch_control *bch);

void encode_bch(struct bch_control *bch, const uint8_t *data,
		unsigned int len, uint8_t *ecc);

int decode_bch(struct bch_control *bch, const uint8_t *data, unsigned int len,
	       const uint8_t *recv_ecc, const uint8_t *calc_ecc,
	       const unsigned int *syn, unsigned int *errloc);

#endif /* _BCH_H */
0.y'>linux-3.0.y</option>
<option value='linux-3.1.y'>linux-3.1.y</option>
<option value='linux-3.10.y'>linux-3.10.y</option>
<option value='linux-3.11.y'>linux-3.11.y</option>
<option value='linux-3.12.y'>linux-3.12.y</option>
<option value='linux-3.13.y'>linux-3.13.y</option>
<option value='linux-3.14.y'>linux-3.14.y</option>
<option value='linux-3.15.y'>linux-3.15.y</option>
<option value='linux-3.16.y'>linux-3.16.y</option>
<option value='linux-3.17.y'>linux-3.17.y</option>
<option value='linux-3.18.y'>linux-3.18.y</option>
<option value='linux-3.19.y'>linux-3.19.y</option>
<option value='linux-3.2.y'>linux-3.2.y</option>
<option value='linux-3.3.y'>linux-3.3.y</option>
<option value='linux-3.4.y'>linux-3.4.y</option>
<option value='linux-3.5.y'>linux-3.5.y</option>
<option value='linux-3.6.y'>linux-3.6.y</option>
<option value='linux-3.7.y'>linux-3.7.y</option>
<option value='linux-3.8.y'>linux-3.8.y</option>
<option value='linux-3.9.y'>linux-3.9.y</option>
<option value='linux-4.0.y'>linux-4.0.y</option>
<option value='linux-4.1.y'>linux-4.1.y</option>
<option value='linux-4.10.y'>linux-4.10.y</option>
<option value='linux-4.11.y'>linux-4.11.y</option>
<option value='linux-4.12.y'>linux-4.12.y</option>
<option value='linux-4.13.y'>linux-4.13.y</option>
<option value='linux-4.14.y'>linux-4.14.y</option>
<option value='linux-4.15.y'>linux-4.15.y</option>
<option value='linux-4.16.y'>linux-4.16.y</option>
<option value='linux-4.17.y'>linux-4.17.y</option>
<option value='linux-4.18.y'>linux-4.18.y</option>
<option value='linux-4.19.y'>linux-4.19.y</option>
<option value='linux-4.2.y'>linux-4.2.y</option>
<option value='linux-4.20.y'>linux-4.20.y</option>
<option value='linux-4.3.y'>linux-4.3.y</option>
<option value='linux-4.4.y'>linux-4.4.y</option>
<option value='linux-4.5.y'>linux-4.5.y</option>
<option value='linux-4.6.y'>linux-4.6.y</option>
<option value='linux-4.7.y'>linux-4.7.y</option>
<option value='linux-4.8.y'>linux-4.8.y</option>
<option value='linux-4.9.y'>linux-4.9.y</option>
<option value='linux-5.0.y'>linux-5.0.y</option>
<option value='linux-5.1.y'>linux-5.1.y</option>
<option value='linux-5.10.y'>linux-5.10.y</option>
<option value='linux-5.11.y'>linux-5.11.y</option>
<option value='linux-5.12.y'>linux-5.12.y</option>
<option value='linux-5.13.y'>linux-5.13.y</option>
<option value='linux-5.14.y'>linux-5.14.y</option>
<option value='linux-5.15.y'>linux-5.15.y</option>
<option value='linux-5.16.y'>linux-5.16.y</option>
<option value='linux-5.17.y'>linux-5.17.y</option>
<option value='linux-5.18.y'>linux-5.18.y</option>
<option value='linux-5.19.y'>linux-5.19.y</option>
<option value='linux-5.2.y'>linux-5.2.y</option>
<option value='linux-5.3.y'>linux-5.3.y</option>
<option value='linux-5.4.y'>linux-5.4.y</option>
<option value='linux-5.5.y'>linux-5.5.y</option>
<option value='linux-5.6.y'>linux-5.6.y</option>
<option value='linux-5.7.y'>linux-5.7.y</option>
<option value='linux-5.8.y'>linux-5.8.y</option>
<option value='linux-5.9.y'>linux-5.9.y</option>
<option value='linux-6.0.y'>linux-6.0.y</option>
<option value='linux-6.1.y'>linux-6.1.y</option>
<option value='linux-6.10.y'>linux-6.10.y</option>
<option value='linux-6.11.y'>linux-6.11.y</option>
<option value='linux-6.12.y' selected='selected'>linux-6.12.y</option>
<option value='linux-6.13.y'>linux-6.13.y</option>
<option value='linux-6.14.y'>linux-6.14.y</option>
<option value='linux-6.15.y'>linux-6.15.y</option>
<option value='linux-6.16.y'>linux-6.16.y</option>
<option value='linux-6.17.y'>linux-6.17.y</option>
<option value='linux-6.18.y'>linux-6.18.y</option>
<option value='linux-6.19.y'>linux-6.19.y</option>
<option value='linux-6.2.y'>linux-6.2.y</option>
<option value='linux-6.3.y'>linux-6.3.y</option>
<option value='linux-6.4.y'>linux-6.4.y</option>
<option value='linux-6.5.y'>linux-6.5.y</option>
<option value='linux-6.6.y'>linux-6.6.y</option>
<option value='linux-6.7.y'>linux-6.7.y</option>
<option value='linux-6.8.y'>linux-6.8.y</option>
<option value='linux-6.9.y'>linux-6.9.y</option>
<option value='linux-rolling-lts'>linux-rolling-lts</option>
<option value='linux-rolling-stable'>linux-rolling-stable</option>
<option value='master'>master</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Hosts the 0x221E linux distro kernel.</td><td class='sub right'>Ubuntu</td></tr></table>
<table class='tabs'><tr><td>
<a href='/distro/kernel/?h=linux-6.12.y'>summary</a><a href='/distro/kernel/refs/?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>refs</a><a class='active' href='/distro/kernel/log/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y'>log</a><a href='/distro/kernel/tree/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>tree</a><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>commit</a><a href='/distro/kernel/diff/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>diff</a></td><td class='form'><form class='right' method='get' action='/distro/kernel/log/drivers/staging/brcm80211/brcmsmac/nicpci.c'>
<input type='hidden' name='h' value='linux-6.12.y'/><input type='hidden' name='id' value='129321804e36721e71fadcab5b475bd37bf53044'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/distro/kernel/log/?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>root</a>/<a href='/distro/kernel/log/drivers?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>drivers</a>/<a href='/distro/kernel/log/drivers/staging?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>staging</a>/<a href='/distro/kernel/log/drivers/staging/brcm80211?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>brcm80211</a>/<a href='/distro/kernel/log/drivers/staging/brcm80211/brcmsmac?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>brcmsmac</a>/<a href='/distro/kernel/log/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044'>nicpci.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/distro/kernel/log/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=129321804e36721e71fadcab5b475bd37bf53044&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2011-07-08 14:03:52 -0700'>2011-07-08</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=02cc343b83a57824b83e1c30024ec9a84e5fb3a2'>staging: brcm80211: nicpci: Neatening</a></td><td>Joe Perches</td></tr>
<tr><td><span title='2011-07-05 19:47:48 -0700'>2011-07-05</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=cc87568a0f94e907d357e041fcbff4f8aaccbd8c'>staging: brcm80211: replaced various typedefs in softmac</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-07-05 09:57:13 -0700'>2011-07-05</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=8a76f1eee1cb8933fb22d1211fdb4358513c3239'>staging: brcm80211: run scripts/cleanfile to remove whitespace errors</a></td><td>Henry Ptasinski</td></tr>
<tr><td><span title='2011-07-05 09:57:11 -0700'>2011-07-05</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=5b5195a57b8144a59e7c0cf9599aeeaac6afaa8a'>staging: brcm80211: remove chip simulation specific code</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-28 13:02:37 -0700'>2011-06-28</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=3bec7bb9356f7def653c49f0f56b5962a292a126'>staging: brcm80211: #include reduction</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:49:30 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=cc3cea5ae091532bf8ed0976499129fe53a589ac'>staging: brcm80211: renamed files in brcmsmac and include directories</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:43:28 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=4489518533a1342fc685b58ada2c9a8a422d5686'>staging: brcm80211: moved register read/write macro's</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:43:28 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=d794fec0a9546f705980750f96df4bead15a15a0'>staging: brcm80211: remove nvram related source files</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-07 12:43:27 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=f97e956afc30cf69c73e75035dc69aafa9a04215'>staging: brcm80211: renamed utility module related files</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:37:03 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=1f7a0c7c00936db0740f368034815e52248e1864'>staging: brcm80211: macro cleanup</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:37:02 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=745c9e6ebc001b540ecbf5401d70797236caa1df'>staging: brcm80211: deleted sbconfig.h, renamed sbcc.h</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:37:01 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=d5f27a8f894ed069a5e7336139a9a13391c6b13e'>staging: brcm80211: replaced typedef si_t with struct si_pub</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:37:00 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=fd24b0fdaed2545f18af57b1553d078b43b16ed1'>staging: brcm80211: remove pci core defintion files</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-07 12:37:00 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=8543df3a1f5d3dafd69882787627b075e62bb3eb'>staging: brcm80211: remove dependency on pci core difinitions from aiutils.c</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-07 12:36:58 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=63182f61193deb1b3b23f7d65c3e0477eb4a0770'>staging: brcm80211: remove unused functions from nicpci.c</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-07 12:36:58 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=e4eb68645202fed4966f080cd68a9fc61b117f0c'>staging: brcm80211: remove functions from nicpci.h</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-07 12:36:57 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=4b1681163cbe5a07d322332b1ec238ffdf43a084'>staging: brcm80211: remove usage of pcicfg.h from brcmsmac driver</a></td><td>Arend van Spriel</td></tr>
<tr><td><span title='2011-06-07 12:36:55 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=b6fe70c3aa866db38b72d1cf84b41c4cae80c87b'>staging: brcm80211: cleaned sb* header files</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-06-07 12:36:49 -0700'>2011-06-07</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=189aed097b1dc458d2290034fb3136147e64a1de'>staging: brcm80211: removed 'hnd' from filenames</a></td><td>Roland Vossen</td></tr>
<tr><td><span title='2011-05-10 11:07:18 -0700'>2011-05-10</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=901937707229abf86d2b976d30bb2285056fce8a'>staging: brcm80211: move functions only used by brcmsmac out of utils</a></td><td>Henry Ptasinski</td></tr>
<tr><td><span title='2011-05-10 11:07:13 -0700'>2011-05-10</span></td><td><a href='/distro/kernel/commit/drivers/staging/brcm80211/brcmsmac/nicpci.c?h=linux-6.12.y&amp;id=47d30257706a90926de396bc3055684d9215abd9'>staging: brcm80211: move files only used by brcmsmac into appropriate dir</a></td><td>Henry Ptasinski</td></tr>