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drivers/mtd/nand/mxs_nand.h 2.19 KB
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9345943b2   Stefan Agner   mtd: nand: mxs_na... 
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  /* SPDX-License-Identifier: GPL-2.0+ */
  /*
   * NXP GPMI NAND flash driver
   *
   * Copyright (C) 2018 Toradex
   * Authors:
   * Stefan Agner <stefan.agner@toradex.com>
   */
68748340c   Stefan Agner   mtd: nand: mxs_na... 
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  #include <linux/mtd/mtd.h>
  #include <asm/cache.h>
  #include <nand.h>
  #include <asm/mach-imx/dma.h>
  
  /**
   * @gf_len:                   The length of Galois Field. (e.g., 13 or 14)
   * @ecc_strength:             A number that describes the strength of the ECC
   *                            algorithm.
   * @ecc_chunk_size:           The size, in bytes, of a single ECC chunk. Note
   *                            the first chunk in the page includes both data and
   *                            metadata, so it's a bit larger than this value.
   * @ecc_chunk_count:          The number of ECC chunks in the page,
   * @block_mark_byte_offset:   The byte offset in the ECC-based page view at
   *                            which the underlying physical block mark appears.
   * @block_mark_bit_offset:    The bit offset into the ECC-based page view at
   *                            which the underlying physical block mark appears.
   */
  struct bch_geometry {
  	unsigned int  gf_len;
  	unsigned int  ecc_strength;
  	unsigned int  ecc_chunk_size;
  	unsigned int  ecc_chunk_count;
  	unsigned int  block_mark_byte_offset;
  	unsigned int  block_mark_bit_offset;
  };
  
  struct mxs_nand_info {
  	struct nand_chip chip;
  	struct udevice *dev;
  	unsigned int	max_ecc_strength_supported;
  	bool		use_minimum_ecc;
  	int		cur_chip;
  
  	uint32_t	cmd_queue_len;
  	uint32_t	data_buf_size;
  	struct bch_geometry bch_geometry;
  
  	uint8_t		*cmd_buf;
  	uint8_t		*data_buf;
  	uint8_t		*oob_buf;
  
  	uint8_t		marking_block_bad;
  	uint8_t		raw_oob_mode;
  
  	struct mxs_gpmi_regs *gpmi_regs;
  	struct mxs_bch_regs *bch_regs;
  
  	/* Functions with altered behaviour */
  	int		(*hooked_read_oob)(struct mtd_info *mtd,
  				loff_t from, struct mtd_oob_ops *ops);
  	int		(*hooked_write_oob)(struct mtd_info *mtd,
  				loff_t to, struct mtd_oob_ops *ops);
  	int		(*hooked_block_markbad)(struct mtd_info *mtd,
  				loff_t ofs);
  
  	/* DMA descriptors */
  	struct mxs_dma_desc	**desc;
  	uint32_t		desc_index;
  };
  
  int mxs_nand_init_ctrl(struct mxs_nand_info *nand_info);
9345943b2   Stefan Agner   mtd: nand: mxs_na... 
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  int mxs_nand_init_spl(struct nand_chip *nand);
5346c31e3   Stefan Agner   mtd: nand: mxs_na... 
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  int mxs_nand_setup_ecc(struct mtd_info *mtd);