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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182/* SPDX-License-Identifier: GPL-2.0-or-later *//* * MTD device concatenation layer definitions * * Copyright © 2002 Robert Kaiser <rkaiser@sysgo.de> */
#ifndef MTD_CONCAT_H#define MTD_CONCAT_H
/* * Our storage structure: * Subdev points to an array of pointers to struct mtd_info objects * which is allocated along with this structure * */struct mtd_concat { struct mtd_info mtd; int num_subdev; struct mtd_info *subdev[];};
struct mtd_info *mtd_concat_create( struct mtd_info *subdev[], /* subdevices to concatenate */ int num_devs, /* number of subdevices */ const char *name); /* name for the new device */
void mtd_concat_destroy(struct mtd_info *mtd);
/** * mtd_virt_concat_node_create - Create a component for concatenation * * Returns a positive number representing the no. of devices found for * concatenation, or a negative error code. * * List all the devices for concatenations found in DT and create a * component for concatenation. */int mtd_virt_concat_node_create(void);
/** * mtd_virt_concat_add - add mtd_info object to the list of subdevices for concatenation * @mtd: pointer to new MTD device info structure * * Returns true if the mtd_info object is added successfully else returns false. * * The mtd_info object is added to the list of subdevices for concatenation. * It returns true if a match is found, and false if all subdevices have * already been added or if the mtd_info object does not match any of the * intended MTD devices. */bool mtd_virt_concat_add(struct mtd_info *mtd);
/** * mtd_virt_concat_create_join - Create and register the concatenated MTD device * * Returns 0 on succes, or a negative error code. * * Creates and registers the concatenated MTD device */int mtd_virt_concat_create_join(void);
/** * mtd_virt_concat_destroy - Remove the concat that includes a specific mtd device * as one of its components. * @mtd: pointer to MTD device info structure. * * Returns 0 on succes, or a negative error code. * * If the mtd_info object is part of a concatenated device, all other MTD devices * within that concat are registered individually. The concatenated device is then * removed, along with its concatenation component. * */int mtd_virt_concat_destroy(struct mtd_info *mtd);
void mtd_virt_concat_destroy_joins(void);void mtd_virt_concat_destroy_items(void);
#endif