LXR uboot/include/mxs

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * NXP GPMI NAND flash driver
   4 *
   5 * Copyright (C) 2018 Toradex
   6 * Authors:
   7 * Stefan Agner <stefan.agner@toradex.com>
   8 */
   9
  10#include <linux/mtd/mtd.h>
  11#include <linux/mtd/rawnand.h>
  12#include <asm/cache.h>
  13#include <nand.h>
  14#include <asm/mach-imx/dma.h>
  15
  16/**
  17 * @gf_len:                   The length of Galois Field. (e.g., 13 or 14)
  18 * @ecc_strength:             A number that describes the strength of the ECC
  19 *                            algorithm.
  20 * @ecc_chunk0_size:          The size, in bytes, of a first ECC chunk.
  21 * @ecc_chunkn_size:          The size, in bytes, of a single ECC chunk after
  22 *                            the first chunk in the page.
  23 * @ecc_chunk_count:          The number of ECC chunks in the page,
  24 * @block_mark_byte_offset:   The byte offset in the ECC-based page view at
  25 *                            which the underlying physical block mark appears.
  26 * @block_mark_bit_offset:    The bit offset into the ECC-based page view at
  27 *                            which the underlying physical block mark appears.
  28 * @ecc_for_meta:             The flag to indicate if there is a dedicate ecc
  29 *                            for meta.
  30 */
  31struct bch_geometry {
  32        unsigned int  gf_len;
  33        unsigned int  ecc_strength;
  34        unsigned int  ecc_chunk0_size;
  35        unsigned int  ecc_chunkn_size;
  36        unsigned int  ecc_chunk_count;
  37        unsigned int  block_mark_byte_offset;
  38        unsigned int  block_mark_bit_offset;
  39        unsigned int  ecc_for_meta; /* ECC for meta data */
  40};
  41
  42struct mxs_nand_info {
  43        struct nand_chip chip;
  44        struct udevice *dev;
  45        unsigned int    max_ecc_strength_supported;
  46        bool            use_minimum_ecc;
  47        /* legacy bch geometry flag */
  48        bool            legacy_bch_geometry;
  49        int             cur_chip;
  50
  51        uint32_t        cmd_queue_len;
  52        uint32_t        data_buf_size;
  53        struct bch_geometry bch_geometry;
  54
  55        uint8_t         *cmd_buf;
  56        uint8_t         *data_buf;
  57        uint8_t         *oob_buf;
  58
  59        uint8_t         marking_block_bad;
  60        uint8_t         raw_oob_mode;
  61
  62        struct mxs_gpmi_regs *gpmi_regs;
  63        struct mxs_bch_regs *bch_regs;
  64
  65        /* Functions with altered behaviour */
  66        int             (*hooked_read_oob)(struct mtd_info *mtd,
  67                                loff_t from, struct mtd_oob_ops *ops);
  68        int             (*hooked_write_oob)(struct mtd_info *mtd,
  69                                loff_t to, struct mtd_oob_ops *ops);
  70        int             (*hooked_block_markbad)(struct mtd_info *mtd,
  71                                loff_t ofs);
  72
  73        /* DMA descriptors */
  74        struct mxs_dma_desc     **desc;
  75        uint32_t                desc_index;
  76
  77        /* Hardware BCH interface and randomizer */
  78        u32 en_randomizer;
  79        u32 writesize;
  80        u32 oobsize;
  81        u32 bch_flash0layout0;
  82        u32 bch_flash0layout1;
  83};
  84
  85struct mxs_nand_layout {
  86        u32 nblocks;
  87        u32 meta_size;
  88        u32 data0_size;
  89        u32 ecc0;
  90        u32 datan_size;
  91        u32 eccn;
  92        u32 gf_len;
  93};
  94
  95int mxs_nand_init_ctrl(struct mxs_nand_info *nand_info);
  96int mxs_nand_init_spl(struct nand_chip *nand);
  97int mxs_nand_setup_ecc(struct mtd_info *mtd);
  98
  99void mxs_nand_mode_fcb_62bit(struct mtd_info *mtd);
 100void mxs_nand_mode_fcb_40bit(struct mtd_info *mtd);
 101void mxs_nand_mode_normal(struct mtd_info *mtd);
 102u32 mxs_nand_mark_byte_offset(struct mtd_info *mtd);
 103u32 mxs_nand_mark_bit_offset(struct mtd_info *mtd);
 104void mxs_nand_get_layout(struct mtd_info *mtd, struct mxs_nand_layout *l);
 105