text: /*
   * MTD partitioning layer definitions
   *
   * (C) 2000 Nicolas Pitre <nico@cam.org>
   *
   * This code is GPL
   *
   * $Id: partitions.h,v 1.17 2005/11/07 11:14:55 gleixner Exp $
   */
  
  #ifndef MTD_PARTITIONS_H
  #define MTD_PARTITIONS_H
  
  #include <linux/types.h>
  
  
  /*
   * Partition definition structure:
   *
   * An array of struct partition is passed along with a MTD object to
   * add_mtd_partitions() to create them.
   *
   * For each partition, these fields are available:
   * name: string that will be used to label the partition's MTD device.
   * size: the partition size; if defined as MTDPART_SIZ_FULL, the partition
   * 	will extend to the end of the master MTD device.
   * offset: absolute starting position within the master MTD device; if
   * 	defined as MTDPART_OFS_APPEND, the partition will start where the
   * 	previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block.
   * mask_flags: contains flags that have to be masked (removed) from the
   * 	master MTD flag set for the corresponding MTD partition.
   * 	For example, to force a read-only partition, simply adding
   * 	MTD_WRITEABLE to the mask_flags will do the trick.
   *
   * Note: writeable partitions require their size and offset be
   * erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
   */
  
  struct mtd_partition {
  	char *name;			/* identifier string */
  	uint64_t size;			/* partition size */
  	uint64_t offset;		/* offset within the master MTD space */
  	u_int32_t mask_flags;		/* master MTD flags to mask out for this partition */
  	struct nand_ecclayout *ecclayout;	/* out of band layout for this partition (NAND only)*/
  	struct mtd_info **mtdp;		/* pointer to store the MTD object */
  };
  
  #define MTDPART_OFS_NXTBLK	(-2)
  #define MTDPART_OFS_APPEND	(-1)
  #define MTDPART_SIZ_FULL	(0)
  
  
  int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
  int del_mtd_partitions(struct mtd_info *);
  
  #if 0
  /*
   * Functions dealing with the various ways of partitioning the space
   */
  
  struct mtd_part_parser {
  	struct list_head list;
  	struct module *owner;
  	const char *name;
  	int (*parse_fn)(struct mtd_info *, struct mtd_partition **, unsigned long);
  };
  
  extern int register_mtd_parser(struct mtd_part_parser *parser);
  extern int deregister_mtd_parser(struct mtd_part_parser *parser);
  extern int parse_mtd_partitions(struct mtd_info *master, const char **types,
  				struct mtd_partition **pparts, unsigned long origin);
  
  #define put_partition_parser(p) do { module_put((p)->owner); } while(0)
  
  struct device;
  struct device_node;
  
  int __devinit of_mtd_parse_partitions(struct device *dev,
  				      struct mtd_info *mtd,
  				      struct device_node *node,
  				      struct mtd_partition **pparts);
  #endif
  
  #endif
  