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09d40e0e08
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a2 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef IO_DRIVER_H
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#define IO_DRIVER_H
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#include <stdint.h>
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#include <drivers/io/io_storage.h>
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/* Generic IO entity structure,representing an accessible IO construct on the
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* device, such as a file */
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typedef struct io_entity {
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struct io_dev_info *dev_handle;
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uintptr_t info;
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} io_entity_t;
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/* Device info structure, providing device-specific functions and a means of
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* adding driver-specific state */
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typedef struct io_dev_info {
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const struct io_dev_funcs *funcs;
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uintptr_t info;
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} io_dev_info_t;
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/* Structure used to create a connection to a type of device */
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typedef struct io_dev_connector {
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/* dev_open opens a connection to a particular device driver */
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int (*dev_open)(const uintptr_t dev_spec, io_dev_info_t **dev_info);
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} io_dev_connector_t;
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/* Structure to hold device driver function pointers */
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typedef struct io_dev_funcs {
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io_type_t (*type)(void);
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int (*open)(io_dev_info_t *dev_info, const uintptr_t spec,
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io_entity_t *entity);
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int (*seek)(io_entity_t *entity, int mode, ssize_t offset);
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int (*size)(io_entity_t *entity, size_t *length);
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int (*read)(io_entity_t *entity, uintptr_t buffer, size_t length,
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size_t *length_read);
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int (*write)(io_entity_t *entity, const uintptr_t buffer,
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size_t length, size_t *length_written);
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int (*close)(io_entity_t *entity);
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int (*dev_init)(io_dev_info_t *dev_info, const uintptr_t init_params);
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int (*dev_close)(io_dev_info_t *dev_info);
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} io_dev_funcs_t;
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/* Operations intended to be performed during platform initialisation */
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/* Register an IO device */
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int io_register_device(const io_dev_info_t *dev_info);
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#endif /* IO_DRIVER_H */
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