forked from Imagelibrary/rtems
283b4406c0
Use ISR_LOCK_NEEDS_OBJECT to determine if a lock object is needed. Update #4957 and #5038.
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSImplClassicIO
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*
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* @brief This header file provides interfaces used by the I/O Manager
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* implementation.
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*/
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/*
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* COPYRIGHT (c) 1989-2008.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTEMS_IOIMPL_H
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#define _RTEMS_IOIMPL_H
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#include <rtems/io.h>
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#include <rtems/score/isrlock.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/**
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* @defgroup RTEMSImplClassicIO I/O Manager
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*
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* @ingroup RTEMSImplClassic
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*
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* @brief This group contains the I/O Manager implementation.
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*
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* @{
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*/
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extern const size_t _IO_Number_of_drivers;
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extern rtems_driver_address_table _IO_Driver_address_table[];
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extern bool _IO_All_drivers_initialized;
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/**
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* @brief Initialization of all device drivers.
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*
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* Initializes all device drivers.
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*/
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void _IO_Initialize_all_drivers( void );
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#if ISR_LOCK_NEEDS_OBJECT
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extern ISR_lock_Control _IO_Driver_registration_lock;
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#endif
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static inline void _IO_Driver_registration_acquire(
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ISR_lock_Context *lock_context
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)
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{
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_ISR_lock_ISR_disable_and_acquire(
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&_IO_Driver_registration_lock,
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lock_context
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);
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}
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static inline void _IO_Driver_registration_release(
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ISR_lock_Context *lock_context
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)
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{
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_ISR_lock_Release_and_ISR_enable(
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&_IO_Driver_registration_lock,
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lock_context
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);
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}
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/** @} */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _RTEMS_IOIMPL_H */
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