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authorSebastian Huber <sebastian.huber@embedded-brains.de>2020-06-22 14:20:19 +0200
committerSebastian Huber <sebastian.huber@embedded-brains.de>2021-04-28 07:38:50 +0200
commit0b9e307f24a28c68acc90b874198a125b1207ab6 (patch)
tree261557a99aaa788c5b754a0664b27899493ab450
parent278c7daabfc2e731e1faa75ef09aa3708592e130 (diff)
downloadrtems-0b9e307f24a28c68acc90b874198a125b1207ab6.tar.bz2
rtems: Generate <rtems/rtems/intr.h>
Change license to BSD-2-Clause according to file histories and documentation re-licensing agreement. Update #3899. Update #3993.
-rw-r--r--cpukit/include/rtems/irq-extension.h2
-rw-r--r--cpukit/include/rtems/rtems/intr.h968
2 files changed, 750 insertions, 220 deletions
diff --git a/cpukit/include/rtems/irq-extension.h b/cpukit/include/rtems/irq-extension.h
index 2105194c00..915be09e2b 100644
--- a/cpukit/include/rtems/irq-extension.h
+++ b/cpukit/include/rtems/irq-extension.h
@@ -29,7 +29,7 @@ extern "C" {
/**
* @defgroup rtems_interrupt_extension Interrupt Manager Extension
*
- * @ingroup ClassicINTR
+ * @ingroup RTEMSAPIClassicIntr
*
* In addition to the Classic API interrupt handler with a handle are
* supported. You can also install multiple shared handler for one interrupt
diff --git a/cpukit/include/rtems/rtems/intr.h b/cpukit/include/rtems/rtems/intr.h
index a55b64d207..c9222fcc4d 100644
--- a/cpukit/include/rtems/rtems/intr.h
+++ b/cpukit/include/rtems/rtems/intr.h
@@ -1,343 +1,737 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
/**
- * @file
- *
- * @ingroup ClassicINTR
+ * @file
*
- * This include file contains all the constants and structures associated with
- * the Interrupt Manager.
+ * @brief This header file defines the Interrupt Manager API.
+ */
+
+/*
+ * Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
+ * Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
*/
-/* COPYRIGHT (c) 1989-2013.
- * On-Line Applications Research Corporation (OAR).
+/*
+ * This file is part of the RTEMS quality process and was automatically
+ * generated. If you find something that needs to be fixed or
+ * worded better please post a report or patch to an RTEMS mailing list
+ * or raise a bug report:
*
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rtems.org/license/LICENSE.
+ * https://www.rtems.org/bugs.html
+ *
+ * For information on updating and regenerating please refer to the How-To
+ * section in the Software Requirements Engineering chapter of the
+ * RTEMS Software Engineering manual. The manual is provided as a part of
+ * a release. For development sources please refer to the online
+ * documentation at:
+ *
+ * https://docs.rtems.org
*/
+/* Generated from spec:/rtems/intr/if/header */
+
#ifndef _RTEMS_RTEMS_INTR_H
#define _RTEMS_RTEMS_INTR_H
#include <rtems/rtems/status.h>
+#include <rtems/score/basedefs.h>
+#include <rtems/score/cpu.h>
#include <rtems/score/isr.h>
+#include <rtems/score/isrlevel.h>
#include <rtems/score/isrlock.h>
+#include <rtems/score/smplock.h>
#ifdef __cplusplus
extern "C" {
#endif
+/* Generated from spec:/rtems/intr/if/group */
+
/**
- * @defgroup ClassicINTR Interrupts
+ * @defgroup RTEMSAPIClassicIntr Interrupt Manager
*
- * @ingroup RTEMSAPIClassic
+ * @ingroup RTEMSAPIClassic
*
- * This encapsulates functionality related to the Classic API Interrupt
- * Manager.
+ * @brief Any real-time executive must provide a mechanism for quick response
+ * to externally generated interrupts to satisfy the critical time
+ * constraints of the application. The Interrupt Manager provides this
+ * mechanism for RTEMS. This manager permits quick interrupt response times
+ * by providing the critical ability to alter task execution which allows a
+ * task to be preempted upon exit from an ISR.
*/
-/**@{*/
-/**
- * @brief Interrupt level type.
- */
-typedef ISR_Level rtems_interrupt_level;
+/* Generated from spec:/rtems/intr/if/isr */
/**
- * @brief Control block type used to manage the vectors.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief This type defines the return type of interrupt service routines.
+ *
+ * This type can be used to document interrupt service routines in the source
+ * code.
*/
-typedef ISR_Vector_number rtems_vector_number;
+typedef ISR_Handler rtems_isr;
+
+/* Generated from spec:/rtems/intr/if/isr-entry */
/**
- * @brief Return type for interrupt handler.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Interrupt service routines installed by rtems_interrupt_catch() shall
+ * have this function pointer type.
*/
-typedef ISR_Handler rtems_isr;
-
-#if (CPU_SIMPLE_VECTORED_INTERRUPTS == FALSE)
+#if CPU_SIMPLE_VECTORED_INTERRUPTS == TRUE
+ typedef ISR_Handler_entry rtems_isr_entry;
+#else
+ typedef void ( *rtems_isr_entry )( void * );
+#endif
-typedef ISR_Handler_entry rtems_isr_entry;
+/* Generated from spec:/rtems/intr/if/level */
-#else
/**
- * @brief Interrupt handler type.
+ * @ingroup RTEMSAPIClassicIntr
*
- * @see rtems_interrupt_catch()
+ * @brief This integer type represents interrupt levels.
*/
-typedef rtems_isr ( *rtems_isr_entry )(
- rtems_vector_number
- );
+typedef ISR_Level rtems_interrupt_level;
+
+/* Generated from spec:/rtems/intr/if/lock */
/**
- * @brief RTEMS Interrupt Catch
- *
- * This directive installs @a new_isr_handler as the RTEMS interrupt service
- * routine for the interrupt vector with number @a vector. The previous RTEMS
- * interrupt service routine is returned in @a old_isr_handler.
- *
- * @param[in] new_isr_handler is the address of interrupt service routine
- * @param[in] vector is the interrupt vector number
- * @param[in] old_isr_handler address at which to store previous ISR address
- *
- * @retval RTEMS_SUCCESSFUL and *old_isr_handler filled with previous ISR
- * address
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief This structure represents an ISR lock.
*/
-rtems_status_code rtems_interrupt_catch(
- rtems_isr_entry new_isr_handler,
- rtems_vector_number vector,
- rtems_isr_entry *old_isr_handler
-);
-#endif
+typedef ISR_lock_Control rtems_interrupt_lock;
-#if !defined(RTEMS_SMP)
+/* Generated from spec:/rtems/intr/if/lock-context */
/**
- * @brief Disable RTEMS Interrupt
+ * @ingroup RTEMSAPIClassicIntr
*
- * @note The interrupt level shall be of type @ref rtems_interrupt_level.
- *
- * This macro is only available on uni-processor configurations. The macro
- * rtems_interrupt_local_disable() is available on all configurations.
+ * @brief This structure provides an ISR lock context for acquire and release
+ * pairs.
*/
-#define rtems_interrupt_disable( _isr_cookie ) \
- _ISR_Local_disable(_isr_cookie)
+typedef ISR_lock_Context rtems_interrupt_lock_context;
+
+/* Generated from spec:/rtems/intr/if/vector-number */
/**
- * @brief Enable RTEMS Interrupt
- *
- * @note The interrupt level shall be of type @ref rtems_interrupt_level.
+ * @ingroup RTEMSAPIClassicIntr
*
- * This macro is only available on uni-processor configurations. The macro
- * rtems_interrupt_local_enable() is available on all configurations.
+ * @brief This integer type represents interrupt vector numbers.
*/
-#define rtems_interrupt_enable( _isr_cookie ) \
- _ISR_Local_enable(_isr_cookie)
+typedef ISR_Vector_number rtems_vector_number;
+
+/* Generated from spec:/rtems/intr/if/catch */
/**
- * @brief Flash RTEMS Interrupt
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Establishes an interrupt service routine.
+ *
+ * @param new_isr_handler is the new interrupt service routine.
+ *
+ * @param vector is the interrupt vector number.
+ *
+ * @param[out] old_isr_handler is the pointer to an ::rtems_isr_entry variable.
+ * When the directive call is successful, the previous interrupt service
+ * routine established for this interrupt vector will be stored in this
+ * variable.
+ *
+ * This directive establishes an interrupt service routine (ISR) for the
+ * interrupt specified by the ``vector`` number. The ``new_isr_handler``
+ * parameter specifies the entry point of the ISR. The entry point of the
+ * previous ISR for the specified vector is returned in ``old_isr_handler``.
+ *
+ * To release an interrupt vector, pass the old handler's address obtained when
+ * the vector was first capture.
*
- * @note The interrupt level shall be of type @ref rtems_interrupt_level.
+ * @retval ::RTEMS_SUCCESSFUL The requested operation was successful.
*
- * This macro is only available on uni-processor configurations. The macro
- * rtems_interrupt_local_disable() and rtems_interrupt_local_enable() is
- * available on all configurations.
+ * @retval ::RTEMS_INVALID_NUMBER The interrupt vector number was illegal.
+ *
+ * @retval ::RTEMS_INVALID_ADDRESS The ``new_isr_handler`` parameter was NULL.
+ *
+ * @retval ::RTEMS_INVALID_ADDRESS The ``old_isr_handler`` parameter was NULL.
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within interrupt context.
+ *
+ * * The directive may be called from within device driver initialization
+ * context.
+ *
+ * * The directive may be called from within task context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ *
+ * * The directive is only available where the target architecture support
+ * enabled simple vectored interrupts.
+ * @endparblock
*/
-#define rtems_interrupt_flash( _isr_cookie ) \
- _ISR_Local_flash(_isr_cookie)
+rtems_status_code rtems_interrupt_catch(
+ rtems_isr_entry new_isr_handler,
+ rtems_vector_number vector,
+ rtems_isr_entry *old_isr_handler
+);
-#endif /* RTEMS_SMP */
+#if !defined(RTEMS_SMP)
+ /* Generated from spec:/rtems/intr/if/disable */
+
+ /**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Disables the maskable interrupts on the current processor.
+ *
+ * @param[out] _isr_cookie is a variable of type ::rtems_interrupt_level which
+ * will be used to save the previous interrupt level.
+ *
+ * This directive disables all maskable interrupts on the current processor and
+ * returns the previous interrupt level in ``_isr_cookie``.
+ *
+ * @par Notes
+ * @parblock
+ * A later invocation of the rtems_interrupt_enable() directive should be used
+ * to restore the previous interrupt level.
+ *
+ * This directive is implemented as a macro which sets the ``_isr_cookie``
+ * parameter.
+ *
+ * @code
+ * #include <rtems.h>
+ *
+ * void local_critical_section( void )
+ * {
+ * rtems_interrupt_level level;
+ *
+ * // Please note that the rtems_interrupt_disable() is a macro. The
+ * // previous interrupt level (before the maskable interrupts are
+ * // disabled) is returned here in the level macro parameter. This
+ * // would be wrong:
+ * //
+ * // rtems_interrupt_disable( &level );
+ * rtems_interrupt_disable( level );
+ *
+ * // Here is the critical section: maskable interrupts are disabled
+ *
+ * {
+ * rtems_interrupt_level nested_level;
+ *
+ * rtems_interrupt_disable( nested_level );
+ *
+ * // Here is a nested critical section
+ *
+ * rtems_interrupt_enable( nested_level );
+ * }
+ *
+ * // Maskable interrupts are still disabled
+ *
+ * rtems_interrupt_enable( level );
+ * }
+ * @endcode
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ *
+ * * Where the system was built with SMP support enabled, the directive is not
+ * available. Its use will result in compiler warnings and linker errors.
+ * The rtems_interrupt_local_disable() and rtems_interrupt_local_enable()
+ * directives are available in all build configurations.
+ * @endparblock
+ */
+ #define rtems_interrupt_disable( _isr_cookie ) _ISR_Local_disable( _isr_cookie )
+#endif
+
+#if !defined(RTEMS_SMP)
+ /* Generated from spec:/rtems/intr/if/enable */
+
+ /**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Restores the previous interrupt level on the current processor.
+ *
+ * @param[in] _isr_cookie is the previous interrupt level to restore. The
+ * value must be obtained by a previous call to rtems_interrupt_disable() or
+ * rtems_interrupt_flash().
+ *
+ * This directive restores the interrupt level specified by ``_isr_cookie`` on
+ * the current processor.
+ *
+ * @par Notes
+ * @parblock
+ * The ``_isr_cookie`` parameter value must be obtained by a previous call to
+ * rtems_interrupt_disable() or rtems_interrupt_flash(). Using an otherwise
+ * obtained value is undefined behaviour.
+ *
+ * This directive is unsuitable to enable particular interrupt sources, for
+ * example in an interrupt controller.
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ *
+ * * While at least one maskable interrupt is pending, when the directive
+ * enables maskable interrupts, the pending interrupts are immediately
+ * serviced. The interrupt service routines may unblock higher priority
+ * tasks which may preempt the calling task.
+ *
+ * * Where the system was built with SMP support enabled, the directive is not
+ * available. Its use will result in compiler warnings and linker errors.
+ * The rtems_interrupt_local_disable() and rtems_interrupt_local_enable()
+ * directives are available in all build configurations.
+ * @endparblock
+ */
+ #define rtems_interrupt_enable( _isr_cookie ) _ISR_Local_enable( _isr_cookie )
+#endif
+
+#if !defined(RTEMS_SMP)
+ /* Generated from spec:/rtems/intr/if/flash */
+
+ /**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Flashes interrupts on the current processor.
+ *
+ * @param[in,out] _isr_cookie is the previous interrupt level.
+ *
+ * This directive is functionally equivalent to a calling
+ * rtems_interrupt_enable() immediately followed by a
+ * rtems_interrupt_disable(). On some architectures it is possible to provide
+ * an optimized implementation for this sequence.
+ *
+ * @par Notes
+ * @parblock
+ * The ``_isr_cookie`` parameter value must be obtained by a previous call to
+ * rtems_interrupt_disable() or rtems_interrupt_flash(). Using an otherwise
+ * obtained value is undefined behaviour.
+ *
+ * Historically, the interrupt flash directive was heavily used in the
+ * operating system implementation. However, this is no longer the case. The
+ * interrupt flash directive is provided for backward compatibility reasons.
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ *
+ * * Where the system was built with SMP support enabled, the directive is not
+ * available. Its use will result in compiler warnings and linker errors.
+ * The rtems_interrupt_local_disable() and rtems_interrupt_local_enable()
+ * directives are available in all build configurations.
+ * @endparblock
+ */
+ #define rtems_interrupt_flash( _isr_cookie ) _ISR_Local_flash( _isr_cookie )
+#endif
+
+/* Generated from spec:/rtems/intr/if/local-disable */
/**
- * @brief This macro disables the interrupts on the current processor.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Disables the maskable interrupts on the current processor.
+ *
+ * @param[out] _isr_cookie is a variable of type ::rtems_interrupt_level which
+ * will be used to save the previous interrupt level.
+ *
+ * This directive disables all maskable interrupts on the current processor and
+ * returns the previous interrupt level in ``_isr_cookie``.
+ *
+ * @par Notes
+ * @parblock
+ * A later invocation of the rtems_interrupt_local_enable() directive should be
+ * used to restore the previous interrupt level.
+ *
+ * This directive is implemented as a macro which sets the ``_isr_cookie``
+ * parameter.
+ *
+ * Where the system was built with SMP support enabled, this will not ensure
+ * system wide mutual exclusion. Use interrupt locks instead, see
+ * rtems_interrupt_lock_acquire(). Interrupt disabled critical sections may be
+ * used to access processor-specific data structures or disable thread
+ * dispatching.
+ *
+ * @code
+ * #include <rtems.h>
+ *
+ * void local_critical_section( void )
+ * {
+ * rtems_interrupt_level level;
+ *
+ * // Please note that the rtems_interrupt_local_disable() is a macro.
+ * // The previous interrupt level (before the maskable interrupts are
+ * // disabled) is returned here in the level macro parameter. This would
+ * // be wrong:
+ * //
+ * // rtems_interrupt_local_disable( &level );
+ * rtems_interrupt_local_disable( level );
*
- * On SMP configurations this will not ensure system wide mutual exclusion.
- * Use interrupt locks instead.
+ * // Here is the critical section: maskable interrupts are disabled
*
- * @param[in] _isr_cookie The previous interrupt level is returned. The type
- * of this variable must be rtems_interrupt_level.
+ * {
+ * rtems_interrupt_level nested_level;
*
- * @see rtems_interrupt_local_enable().
+ * rtems_interrupt_local_disable( nested_level );
+ *
+ * // Here is a nested critical section
+ *
+ * rtems_interrupt_local_enable( nested_level );
+ * }
+ *
+ * // Maskable interrupts are still disabled
+ *
+ * rtems_interrupt_local_enable( level );
+ * }
+ * @endcode
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
*/
#define rtems_interrupt_local_disable( _isr_cookie ) \
_ISR_Local_disable( _isr_cookie )
+/* Generated from spec:/rtems/intr/if/local-enable */
+
/**
- * @brief This macro restores the previous interrupt level on the current
- * processor.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Restores the previous interrupt level on the current processor.
*
- * @param[in] _isr_cookie The previous interrupt level returned by
+ * @param[in] _isr_cookie is the previous interrupt level to restore. The
+ * value must be obtained by a previous call to
* rtems_interrupt_local_disable().
+ *
+ * This directive restores the interrupt level specified by ``_isr_cookie`` on
+ * the current processor.
+ *
+ * @par Notes
+ * @parblock
+ * The ``_isr_cookie`` parameter value must be obtained by a previous call to
+ * rtems_interrupt_local_disable(). Using an otherwise obtained value is
+ * undefined behaviour.
+ *
+ * This directive is unsuitable to enable particular interrupt sources, for
+ * example in an interrupt controller.
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ *
+ * * While at least one maskable interrupt is pending, when the directive
+ * enables maskable interrupts, the pending interrupts are immediately
+ * serviced. The interrupt service routines may unblock higher priority
+ * tasks which may preempt the calling task.
+ * @endparblock
*/
#define rtems_interrupt_local_enable( _isr_cookie ) \
_ISR_Local_enable( _isr_cookie )
-/**
- * @brief RTEMS Interrupt Is in Progress
- *
- * A return value of true indicates that the caller is an interrupt service
- * routine and @b not a thread. The directives available to an interrupt
- * service routine are restricted.
- */
-#define rtems_interrupt_is_in_progress() \
- _ISR_Is_in_progress()
+/* Generated from spec:/rtems/intr/if/is-in-progress */
/**
- * @brief This routine generates an interrupt.
+ * @ingroup RTEMSAPIClassicIntr
*
- * @note No implementation.
- */
-#define rtems_interrupt_cause( _interrupt_to_cause )
-
-/**
- * @brief This routine clears the specified interrupt.
+ * @brief Checks if an ISR is in progress on the current processor.
*
- * @note No implementation.
- */
-#define rtems_interrupt_clear( _interrupt_to_clear )
-
-/**
- * @defgroup ClassicINTRLocks Interrupt Locks
+ * This directive returns ``true``, if the current processor is currently
+ * servicing an interrupt, and ``false`` otherwise. A return value of ``true``
+ * indicates that the caller is an interrupt service routine, **not** a task.
+ * The directives available to an interrupt service routine are restricted.
*
- * @ingroup ClassicINTR
+ * @return Returns true, if the current processor is currently servicing an
+ * interrupt, otherwise false.
*
- * @brief Low-level lock to protect critical sections accessed by threads and
- * interrupt service routines.
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * On single processor configurations the interrupt locks degrade to simple
- * interrupt disable/enable sequences. No additional storage or objects are
- * required.
+ * * The directive may be called from within any runtime context.
*
- * This synchronization primitive is supported on SMP configurations. Here SMP
- * locks are used.
- * @{
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
*/
+#define rtems_interrupt_is_in_progress() _ISR_Is_in_progress()
-/**
- * @brief Interrupt lock control.
- */
-typedef ISR_lock_Control rtems_interrupt_lock;
+/* Generated from spec:/rtems/intr/if/cause */
/**
- * @brief Local interrupt lock context for acquire and release pairs.
- */
-typedef ISR_lock_Context rtems_interrupt_lock_context;
-
-/**
- * @brief Defines an interrupt lock member.
+ * @ingroup RTEMSAPIClassicIntr
*
- * Do not add a ';' after this macro.
+ * @brief Causes the interrupt.
*
- * @param _designator The designator for the interrupt lock.
- */
-#define RTEMS_INTERRUPT_LOCK_MEMBER( _designator ) \
- ISR_LOCK_MEMBER( _designator )
-
-/**
- * @brief Declares an interrupt lock variable.
+ * @param _vector is the vector number of the interrupt to cause.
*
- * Do not add a ';' after this macro.
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * @param _qualifier The qualifier for the interrupt lock, e.g. extern.
- * @param _designator The designator for the interrupt lock.
+ * * The directive is not implemented.
+ * @endparblock
*/
-#define RTEMS_INTERRUPT_LOCK_DECLARE( _qualifier, _designator ) \
- ISR_LOCK_DECLARE( _qualifier, _designator )
+#define rtems_interrupt_cause( _vector ) do { } while ( 0 )
+
+/* Generated from spec:/rtems/intr/if/clear */
/**
- * @brief Defines an interrupt lock variable.
+ * @ingroup RTEMSAPIClassicIntr
*
- * Do not add a ';' after this macro.
+ * @brief Clears the interrupt.
*
- * @param _qualifier The qualifier for the interrupt lock, e.g. static.
- * @param _designator The designator for the interrupt lock.
- * @param _name The name for the interrupt lock. It must be a string. The
- * name is only used if profiling is enabled.
- */
-#define RTEMS_INTERRUPT_LOCK_DEFINE( _qualifier, _designator, _name ) \
- ISR_LOCK_DEFINE( _qualifier, _designator, _name )
-
-/**
- * @brief Defines an interrupt lock variable reference.
+ * @param _vector is the vector number of the interrupt to clear.
*
- * Do not add a ';' after this macro.
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * @param _designator The designator for the interrupt lock reference.
- * @param _target The target for the interrupt lock reference.
+ * * The directive is not implemented.
+ * @endparblock
*/
-#define RTEMS_INTERRUPT_LOCK_REFERENCE( _designator, _target ) \
- ISR_LOCK_REFERENCE( _designator, _target )
+#define rtems_interrupt_clear( _vector ) do { } while ( 0 )
-/**
- * @brief Initializer for static initialization of interrupt locks.
- *
- * @param _name The name for the interrupt lock. It must be a string. The
- * name is only used if profiling is enabled.
- */
-#define RTEMS_INTERRUPT_LOCK_INITIALIZER( _name ) ISR_LOCK_INITIALIZER( _name )
+/* Generated from spec:/rtems/intr/if/lock-initialize */
/**
- * @brief Initializes an interrupt lock.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Initializes the ISR lock.
*
- * Concurrent initialization leads to unpredictable results.
+ * @param[out] _lock is the ISR lock to initialize.
*
- * @param[in,out] _lock The interrupt lock.
- * @param[in] _name The name for the interrupt lock. This name must be a
- * string persistent throughout the life time of this lock. The name is only
- * used if profiling is enabled.
+ * @param _name is the ISR lock name. It shall be a string. The name is only
+ * used where the system was built with profiling support enabled.
+ *
+ * @par Notes
+ * ISR locks may also be statically defined by RTEMS_INTERRUPT_LOCK_DEFINE() or
+ * statically initialized by RTEMS_INTERRUPT_LOCK_INITIALIZER().
*/
#define rtems_interrupt_lock_initialize( _lock, _name ) \
_ISR_lock_Initialize( _lock, _name )
+/* Generated from spec:/rtems/intr/if/lock-destroy */
+
/**
- * @brief Destroys an interrupt lock.
+ * @ingroup RTEMSAPIClassicIntr
*
- * Concurrent destruction leads to unpredictable results.
+ * @brief Destroys the ISR lock.
*
- * @param[in,out] _lock The interrupt lock control.
- */
-#define rtems_interrupt_lock_destroy( _lock ) \
- _ISR_lock_Destroy( _lock )
-
-/**
- * @brief Disables interrupts on the current processor.
+ * @param[in,out] _lock is the ISR lock to destroy.
+ *
+ * @par Notes
+ * @parblock
+ * The lock must have been dynamically initialized by
+ * rtems_interrupt_lock_initialize(), statically defined by
+ * RTEMS_INTERRUPT_LOCK_DEFINE(), or statically initialized by
+ * RTEMS_INTERRUPT_LOCK_INITIALIZER().
+ *
+ * Concurrent lock use during the destruction or concurrent destruction leads
+ * to unpredictable results.
+ * @endparblock
*
- * This function can be used in thread and interrupt context.
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * @param[in,out] _lock_context The local interrupt lock context for an acquire
- * and release pair.
+ * * The directive may be called from within any runtime context.
*
- * @see rtems_interrupt_lock_acquire_isr().
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
*/
-#define rtems_interrupt_lock_interrupt_disable( _lock_context ) \
- _ISR_lock_ISR_disable( _lock_context )
+#define rtems_interrupt_lock_destroy( _lock ) _ISR_lock_Destroy( _lock )
+
+/* Generated from spec:/rtems/intr/if/lock-acquire */
/**
- * @brief Acquires an interrupt lock.
+ * @ingroup RTEMSAPIClassicIntr
*
- * Interrupts will be disabled. On SMP configurations this function acquires
- * an SMP lock.
+ * @brief Acquires the ISR lock.
+ *
+ * @param[in,out] _lock is the ISR lock to acquire.
+ *
+ * @param[out] _lock_context is the ISR lock context. This lock context shall
+ * be used to release the lock by calling rtems_interrupt_lock_release().
+ *
+ * This directive acquires the ISR lock specified by ``_lock`` using the lock
+ * context provided by ``_lock_context``. Maskable interrupts will be disabled
+ * on the current processor.
+ *
+ * @par Notes
+ * @parblock
+ * A caller-specific lock context shall be provided for each acquire/release
+ * pair, for example an automatic variable.
+ *
+ * Where the system was built with SMP support enabled, this directive acquires
+ * an SMP lock. An attempt to recursively acquire the lock may result in an
+ * infinite loop with maskable interrupts disabled.
+ *
+ * This directive establishes a non-preemptive critical section with system
+ * wide mutual exclusion on the local node in all RTEMS build configurations.
+ *
+ * @code
+ * #include <rtems.h>
+ *
+ * void critical_section( rtems_interrupt_lock *lock )
+ * {
+ * rtems_interrupt_lock_context lock_context;
+ *
+ * rtems_interrupt_lock_acquire( lock, &lock_context );
+ *
+ * // Here is the critical section. Maskable interrupts are disabled.
+ * // Where the system was built with SMP support enabled, this section
+ * // is protected by an SMP lock.
*
- * This function can be used in thread and interrupt context.
+ * rtems_interrupt_lock_release( lock, &lock_context );
+ * }
+ * @endcode
+ * @endparblock
*
- * @param[in,out] _lock The interrupt lock.
- * @param[in,out] _lock_context The local interrupt lock context for an acquire
- * and release pair.
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * @see rtems_interrupt_lock_release().
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
*/
#define rtems_interrupt_lock_acquire( _lock, _lock_context ) \
_ISR_lock_ISR_disable_and_acquire( _lock, _lock_context )
+/* Generated from spec:/rtems/intr/if/lock-release */
+
/**
- * @brief Releases an interrupt lock.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Releases the ISR lock.
+ *
+ * @param[in,out] _lock is the ISR lock to release.
+ *
+ * @param[in,out] _lock_context is the ISR lock context. This lock context
+ * shall have been used to acquire the lock by calling
+ * rtems_interrupt_lock_acquire().
+ *
+ * This directive releases the ISR lock specified by ``_lock`` using the lock
+ * context provided by ``_lock_context``. The previous interrupt level will be
+ * restored on the current processor.
+ *
+ * @par Notes
+ * @parblock
+ * The lock context shall be the one used to acquire the lock, otherwise the
+ * result is unpredictable.
*
- * The interrupt status will be restored. On SMP configurations this function
- * releases an SMP lock.
+ * Where the system was built with SMP support enabled, this directive releases
+ * an SMP lock.
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * This function can be used in thread and interrupt context.
+ * * The directive may be called from within any runtime context.
*
- * @param[in,out] _lock The interrupt lock.
- * @param[in,out] _lock_context The local interrupt lock context for an acquire
- * and release pair.
+ * * The directive will not cause the calling task to be preempted.
*
- * @see rtems_interrupt_lock_acquire().
+ * * While at least one maskable interrupt is pending, when the directive
+ * enables maskable interrupts, the pending interrupts are immediately
+ * serviced. The interrupt service routines may unblock higher priority
+ * tasks which may preempt the calling task.
+ * @endparblock
*/
#define rtems_interrupt_lock_release( _lock, _lock_context ) \
_ISR_lock_Release_and_ISR_enable( _lock, _lock_context )
+/* Generated from spec:/rtems/intr/if/lock-acquire-isr */
+
/**
- * @brief Acquires an interrupt lock in the corresponding interrupt service
- * routine.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Acquires the ISR lock from within an ISR.
+ *
+ * @param[in,out] _lock is the ISR lock to acquire within an ISR.
+ *
+ * @param[out] _lock_context is the ISR lock context. This lock context shall
+ * be used to release the lock by calling rtems_interrupt_lock_release_isr().
+ *
+ * This directive acquires the ISR lock specified by ``_lock`` using the lock
+ * context provided by ``_lock_context``. The interrupt level will remain
+ * unchanged.
*
- * The interrupt status will remain unchanged. On SMP configurations this
- * function acquires an SMP lock.
+ * @par Notes
+ * @parblock
+ * A caller-specific lock context shall be provided for each acquire/release
+ * pair, for example an automatic variable.
+ *
+ * Where the system was built with SMP support enabled, this directive acquires
+ * an SMP lock. An attempt to recursively acquire the lock may result in an
+ * infinite loop.
+ *
+ * This directive is intended for device drivers and should be called from the
+ * corresponding interrupt service routine.
*
* In case the corresponding interrupt service routine can be interrupted by
* higher priority interrupts and these interrupts enter the critical section
- * protected by this lock, then the result is unpredictable.
+ * protected by this lock, then the result is unpredictable. This directive
+ * may be used under specific circumstances as an optimization. In doubt, use
+ * rtems_interrupt_lock_acquire() and rtems_interrupt_lock_release().
+ * @endparblock
*
- * @param[in,out] _lock The interrupt lock.
- * @param[in,out] _lock_context The local interrupt lock context for an acquire
- * and release pair.
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
*
- * @see rtems_interrupt_lock_release_isr().
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
*/
#if defined(RTEMS_SMP)
#define rtems_interrupt_lock_acquire_isr( _lock, _lock_context ) \
@@ -350,18 +744,40 @@ typedef ISR_lock_Context rtems_interrupt_lock_context;
do { (void) _lock_context; } while ( 0 )
#endif
+/* Generated from spec:/rtems/intr/if/lock-release-isr */
+
/**
- * @brief Releases an interrupt lock in the corresponding interrupt service
- * routine.
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Releases the ISR lock from within an ISR.
+ *
+ * @param[in,out] _lock is the ISR lock to release within an ISR.
+ *
+ * @param[in,out] _lock_context is the ISR lock context. This lock context
+ * shall have been used to acquire the lock by calling
+ * rtems_interrupt_lock_acquire_isr().
*
- * The interrupt status will remain unchanged. On SMP configurations this
- * function releases an SMP lock.
+ * This directive releases the ISR lock specified by ``_lock`` using the lock
+ * context provided by ``_lock_context``. The interrupt level will remain
+ * unchanged.
*
- * @param[in,out] _lock The interrupt lock.
- * @param[in,out] _lock_context The local interrupt lock context for an acquire
- * and release pair.
+ * @par Notes
+ * @parblock
+ * The lock context shall be the one used to acquire the lock, otherwise the
+ * result is unpredictable.
*
- * @see rtems_interrupt_lock_acquire_isr().
+ * Where the system was built with SMP support enabled, this directive releases
+ * an SMP lock.
+ * @endparblock
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
*/
#if defined(RTEMS_SMP)
#define rtems_interrupt_lock_release_isr( _lock, _lock_context ) \
@@ -374,13 +790,127 @@ typedef ISR_lock_Context rtems_interrupt_lock_context;
do { (void) _lock_context; } while ( 0 )
#endif
-/** @} */
+/* Generated from spec:/rtems/intr/if/lock-isr-disable */
+
+/**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Disables maskable interrupts on the current processor.
+ *
+ * @param[out] _lock_context is the ISR lock context for an acquire and release
+ * pair.
+ *
+ * This directive disables maskable interrupts on the current processor and
+ * stores the previous interrupt level in ``_lock_context``.
+ *
+ * @par Constraints
+ * @parblock
+ * The following constraints apply to this directive:
+ *
+ * * The directive may be called from within any runtime context.
+ *
+ * * The directive will not cause the calling task to be preempted.
+ * @endparblock
+ */
+#define rtems_interrupt_lock_interrupt_disable( _lock_context ) \
+ _ISR_lock_ISR_disable( _lock_context )
+
+/* Generated from spec:/rtems/intr/if/lock-declare */
+
+/**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Declares an ISR lock object.
+ *
+ * @param _specifier is the storage-class specifier for the ISR lock to
+ * declare, for example ``extern`` or ``static``.
+ *
+ * @param _designator is the ISR lock object designator.
+ *
+ * @par Notes
+ * Do not add a ";" after this macro.
+ */
+#define RTEMS_INTERRUPT_LOCK_DECLARE( _specifier, _designator ) \
+ ISR_LOCK_DECLARE( _specifier, _designator )
+
+/* Generated from spec:/rtems/intr/if/lock-define */
+
+/**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Defines an ISR lock object.
+ *
+ * @param _specifier is the storage-class specifier for the ISR lock to
+ * declare, for example ``extern`` or ``static``.
+ *
+ * @param _designator is the ISR lock object designator.
+ *
+ * @param _name is the ISR lock name. It shall be a string. The name is only
+ * used where the system was built with profiling support enabled.
+ *
+ * @par Notes
+ * @parblock
+ * Do not add a ";" after this macro.
+ *
+ * ISR locks may also be dynamically initialized by
+ * rtems_interrupt_lock_initialize() or statically by
+ * RTEMS_INTERRUPT_LOCK_INITIALIZER().
+ * @endparblock
+ */
+#define RTEMS_INTERRUPT_LOCK_DEFINE( _specifier, _designator, _name ) \
+ ISR_LOCK_DEFINE( _specifier, _designator, _name )
+
+/* Generated from spec:/rtems/intr/if/lock-initializer */
+
+/**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Statically initializes an ISR lock object.
+ *
+ * @param _name is the ISR lock name. It shall be a string. The name is only
+ * used where the system was built with profiling support enabled.
+ *
+ * @par Notes
+ * ISR locks may also be dynamically initialized by
+ * rtems_interrupt_lock_initialize() or statically defined by
+ * RTEMS_INTERRUPT_LOCK_DEFINE().
+ */
+#define RTEMS_INTERRUPT_LOCK_INITIALIZER( _name ) ISR_LOCK_INITIALIZER( _name )
+
+/* Generated from spec:/rtems/intr/if/lock-member */
+
+/**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Defines an ISR lock member.
+ *
+ * @param _designator is the ISR lock member designator.
+ *
+ * @par Notes
+ * Do not add a ";" after this macro.
+ */
+#define RTEMS_INTERRUPT_LOCK_MEMBER( _designator ) \
+ ISR_LOCK_MEMBER( _designator )
+
+/* Generated from spec:/rtems/intr/if/lock-reference */
+
+/**
+ * @ingroup RTEMSAPIClassicIntr
+ *
+ * @brief Defines an ISR lock object reference.
+ *
+ * @param _designator is the ISR lock reference designator.
+ *
+ * @param _target is the target object to reference.
+ *
+ * @par Notes
+ * Do not add a ";" after this macro.
+ */
+#define RTEMS_INTERRUPT_LOCK_REFERENCE( _designator, _target ) \
+ ISR_LOCK_REFERENCE( _designator, _target )
#ifdef __cplusplus
}
#endif
-/**@}*/
-
-#endif
-/* end of include file */
+#endif /* _RTEMS_RTEMS_INTR_H */