mtd/nand/ecc-sw-bch.c

4  * using binary BCH codes. It relies on the generic BCH library lib/bch.c.
15 #include <linux/mtd/nand-ecc-sw-bch.h>
30 	bch_encode(engine_conf->bch, buf, nand->ecc.ctx.conf.step_size, code);  in nand_ecc_sw_bch_calculate()
57 	count = bch_decode(engine_conf->bch, NULL, step_size, read_ecc,  in nand_ecc_sw_bch_correct()
79  * nand_ecc_sw_bch_cleanup - Cleanup software BCH ECC resources
86 	bch_free(engine_conf->bch);  in nand_ecc_sw_bch_cleanup()
92  * nand_ecc_sw_bch_init - Initialize software BCH ECC engine
95  * Returns: a pointer to a new NAND BCH control structure, or NULL upon failure
97  * Initialize NAND BCH error correction. @nand.ecc parameters 'step_size' and
98  * 'bytes' are used to compute the following BCH parameters:
120 	engine_conf->bch = bch_init(m, t, 0, false);  in nand_ecc_sw_bch_init()
121 	if (!engine_conf->bch)  in nand_ecc_sw_bch_init()
140 	bch_encode(engine_conf->bch, erased_page, eccsize,  in nand_ecc_sw_bch_init()
148 	if (engine_conf->bch->ecc_bytes != eccbytes) {  in nand_ecc_sw_bch_init()
150 		       eccbytes, engine_conf->bch->ecc_bytes);  in nand_ecc_sw_bch_init()
178 	/* Only large page NAND chips may use BCH */  in nand_ecc_sw_bch_init_ctx()
180 		pr_err("BCH cannot be used with small page NAND chips\n");  in nand_ecc_sw_bch_init_ctx()
406 MODULE_DESCRIPTION("NAND software BCH ECC support");