diff options
Diffstat (limited to 'sys/dev/nand/nand_bbt.c')
-rw-r--r-- | sys/dev/nand/nand_bbt.c | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/sys/dev/nand/nand_bbt.c b/sys/dev/nand/nand_bbt.c deleted file mode 100644 index d99ed67523a2..000000000000 --- a/sys/dev/nand/nand_bbt.c +++ /dev/null @@ -1,275 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-2-Clause-FreeBSD - * - * Copyright (c) 2009-2012 Semihalf - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/cdefs.h> - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/socket.h> -#include <sys/malloc.h> -#include <sys/bus.h> - -#include <dev/nand/nand.h> - -#include "nand_if.h" - -#define BBT_PRIMARY_PATTERN 0x01020304 -#define BBT_SECONDARY_PATTERN 0x05060708 - -enum bbt_place { - BBT_NONE, - BBT_PRIMARY, - BBT_SECONDARY -}; - -struct nand_bbt { - struct nand_chip *chip; - uint32_t primary_map; - uint32_t secondary_map; - enum bbt_place active; - struct bbt_header *hdr; - uint32_t tab_len; - uint32_t *table; -}; - -struct bbt_header { - uint32_t pattern; - int32_t seq_nr; -}; - -static int nand_bbt_save(struct nand_bbt *); -static int nand_bbt_load_hdr(struct nand_bbt *, struct bbt_header *, int8_t); -static int nand_bbt_load_table(struct nand_bbt *); -static int nand_bbt_prescan(struct nand_bbt *); - -int -nand_init_bbt(struct nand_chip *chip) -{ - struct chip_geom *cg; - struct nand_bbt *bbt; - int err; - - cg = &chip->chip_geom; - - bbt = malloc(sizeof(struct nand_bbt), M_NAND, M_ZERO | M_WAITOK); - if (!bbt) { - device_printf(chip->dev, - "Cannot allocate memory for bad block struct"); - return (ENOMEM); - } - - bbt->chip = chip; - bbt->active = BBT_NONE; - bbt->primary_map = cg->chip_size - cg->block_size; - bbt->secondary_map = cg->chip_size - 2 * cg->block_size; - bbt->tab_len = cg->blks_per_chip * sizeof(uint32_t); - bbt->hdr = malloc(sizeof(struct bbt_header) + bbt->tab_len, M_NAND, - M_WAITOK); - if (!bbt->hdr) { - device_printf(chip->dev, "Cannot allocate %d bytes for BB " - "Table", bbt->tab_len); - free(bbt, M_NAND); - return (ENOMEM); - } - bbt->hdr->seq_nr = 0; - bbt->table = (uint32_t *)((uint8_t *)bbt->hdr + - sizeof(struct bbt_header)); - - err = nand_bbt_load_table(bbt); - if (err) { - free(bbt->table, M_NAND); - free(bbt, M_NAND); - return (err); - } - - chip->bbt = bbt; - if (bbt->active == BBT_NONE) { - bbt->active = BBT_PRIMARY; - memset(bbt->table, 0xff, bbt->tab_len); - nand_bbt_prescan(bbt); - nand_bbt_save(bbt); - } else - device_printf(chip->dev, "Found BBT table for chip\n"); - - return (0); -} - -void -nand_destroy_bbt(struct nand_chip *chip) -{ - - if (chip->bbt) { - nand_bbt_save(chip->bbt); - - free(chip->bbt->hdr, M_NAND); - free(chip->bbt, M_NAND); - chip->bbt = NULL; - } -} - -int -nand_update_bbt(struct nand_chip *chip) -{ - - nand_bbt_save(chip->bbt); - - return (0); -} - -static int -nand_bbt_save(struct nand_bbt *bbt) -{ - enum bbt_place next; - uint32_t addr; - int32_t err; - - if (bbt->active == BBT_PRIMARY) { - addr = bbt->secondary_map; - bbt->hdr->pattern = BBT_SECONDARY_PATTERN; - next = BBT_SECONDARY; - } else { - addr = bbt->primary_map; - bbt->hdr->pattern = BBT_PRIMARY_PATTERN; - next = BBT_PRIMARY; - } - - err = nand_erase_blocks(bbt->chip, addr, - bbt->chip->chip_geom.block_size); - if (err) - return (err); - - bbt->hdr->seq_nr++; - - err = nand_prog_pages_raw(bbt->chip, addr, bbt->hdr, - bbt->tab_len + sizeof(struct bbt_header)); - if (err) - return (err); - - bbt->active = next; - return (0); -} - -static int -nand_bbt_load_hdr(struct nand_bbt *bbt, struct bbt_header *hdr, int8_t primary) -{ - uint32_t addr; - - if (primary) - addr = bbt->primary_map; - else - addr = bbt->secondary_map; - - return (nand_read_pages_raw(bbt->chip, addr, hdr, - sizeof(struct bbt_header))); -} - -static int -nand_bbt_load_table(struct nand_bbt *bbt) -{ - struct bbt_header hdr1, hdr2; - uint32_t address = 0; - int err = 0; - - bzero(&hdr1, sizeof(hdr1)); - bzero(&hdr2, sizeof(hdr2)); - - nand_bbt_load_hdr(bbt, &hdr1, 1); - if (hdr1.pattern == BBT_PRIMARY_PATTERN) { - bbt->active = BBT_PRIMARY; - address = bbt->primary_map; - } else - bzero(&hdr1, sizeof(hdr1)); - - - nand_bbt_load_hdr(bbt, &hdr2, 0); - if ((hdr2.pattern == BBT_SECONDARY_PATTERN) && - (hdr2.seq_nr > hdr1.seq_nr)) { - bbt->active = BBT_SECONDARY; - address = bbt->secondary_map; - } else - bzero(&hdr2, sizeof(hdr2)); - - if (bbt->active != BBT_NONE) - err = nand_read_pages_raw(bbt->chip, address, bbt->hdr, - bbt->tab_len + sizeof(struct bbt_header)); - - return (err); -} - -static int -nand_bbt_prescan(struct nand_bbt *bbt) -{ - int32_t i; - uint8_t bad; - bool printed_hash = 0; - - device_printf(bbt->chip->dev, "No BBT found. Prescan chip...\n"); - for (i = 0; i < bbt->chip->chip_geom.blks_per_chip; i++) { - if (NAND_IS_BLK_BAD(bbt->chip->dev, i, &bad)) - return (ENXIO); - - if (bad) { - device_printf(bbt->chip->dev, "Bad block(%d)\n", i); - bbt->table[i] = 0x0FFFFFFF; - } - if (!(i % 100)) { - printf("#"); - printed_hash = 1; - } - } - - if (printed_hash) - printf("\n"); - - return (0); -} - -int -nand_check_bad_block(struct nand_chip *chip, uint32_t block_number) -{ - - if (!chip || !chip->bbt) - return (0); - - if ((chip->bbt->table[block_number] & 0xF0000000) == 0) - return (1); - - return (0); -} - -int -nand_mark_bad_block(struct nand_chip *chip, uint32_t block_number) -{ - - chip->bbt->table[block_number] = 0x0FFFFFFF; - - return (0); -} |