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/*
* Copyright (c) 2019-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef IO_MTD_H
#define IO_MTD_H
#include <stdint.h>
#include <stdio.h>
#include <drivers/io/io_storage.h>
/* MTD devices ops */
typedef struct io_mtd_ops {
/*
* Initialize MTD framework and retrieve device information.
*
* @size: [out] MTD device size in bytes.
* @erase_size: [out] MTD erase size in bytes.
* Return 0 on success, a negative error code otherwise.
*/
int (*init)(unsigned long long *size, unsigned int *erase_size);
/*
* Execute a read memory operation.
*
* @offset: Offset in bytes to start read operation.
* @buffer: [out] Buffer to store read data.
* @length: Required length to be read in bytes.
* @out_length: [out] Length read in bytes.
* Return 0 on success, a negative error code otherwise.
*/
int (*read)(unsigned int offset, uintptr_t buffer, size_t length,
size_t *out_length);
/*
* Execute a write memory operation.
*
* @offset: Offset in bytes to start write operation.
* @buffer: Buffer to be written in device.
* @length: Required length to be written in bytes.
* Return 0 on success, a negative error code otherwise.
*/
int (*write)(unsigned int offset, uintptr_t buffer, size_t length);
/*
* Look for an offset to be added to the given offset.
*
* @base: Base address of the area.
* @offset: Offset in bytes to start read operation.
* @extra_offset: [out] Offset to be added to the previous offset.
* Return 0 on success, a negative error code otherwise.
*/
int (*seek)(uintptr_t base, unsigned int offset, size_t *extra_offset);
} io_mtd_ops_t;
typedef struct io_mtd_dev_spec {
unsigned long long device_size;
unsigned int erase_size;
size_t offset;
io_mtd_ops_t ops;
} io_mtd_dev_spec_t;
struct io_dev_connector;
int register_io_dev_mtd(const struct io_dev_connector **dev_con);
#endif /* IO_MTD_H */
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