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Diffstat (limited to 'cpu/ixp/npe/include/IxTimerCtrl.h')
| -rw-r--r-- | cpu/ixp/npe/include/IxTimerCtrl.h | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/cpu/ixp/npe/include/IxTimerCtrl.h b/cpu/ixp/npe/include/IxTimerCtrl.h new file mode 100644 index 0000000000..669dd3ef28 --- /dev/null +++ b/cpu/ixp/npe/include/IxTimerCtrl.h @@ -0,0 +1,263 @@ +/** + * @file IxTimerCtrl.h + * @brief + * This is the header file for the Timer Control component. + * + * The timer callback control component provides a mechanism by which different + * client components can start a timer and have a supplied callback function + * invoked when the timer expires. + * The callbacks are all dispatched from one thread inside this component. + * Any component that needs to be called periodically should use this facility + * rather than create its own task with a sleep loop. + * + * @par + * + * @par + * IXP400 SW Release version 2.0 + * + * -- Copyright Notice -- + * + * @par + * Copyright 2001-2005, Intel Corporation. + * All rights reserved. + * + * @par + * 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. + * 3. Neither the name of the Intel Corporation nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * @par + * 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. + * + * @par + * -- End of Copyright Notice -- +*/ + +/** + * @defgroup IxTimerCtrl IXP400 Timer Control (IxTimerCtrl) API + * + * @brief The public API for the IXP400 Timer Control Component. + * + * @{ + */ + +#ifndef IxTimerCtrl_H +#define IxTimerCtrl_H + + +#include "IxTypes.h" +/* #include "Ossl.h" */ + +/* + * #defines and macros used in this file. + */ + +/** + * @ingroup IxTimerCtrl + * + * @def IX_TIMERCTRL_NO_FREE_TIMERS + * + * @brief Timer schedule return code. + * + * Indicates that the request to start a timer failed because + * all available timer resources are used. + */ +#define IX_TIMERCTRL_NO_FREE_TIMERS 2 + + +/** + * @ingroup IxTimerCtrl + * + * @def IX_TIMERCTRL_PARAM_ERROR + * + * @brief Timer schedule return code. + * + * Indicates that the request to start a timer failed because + * the client has supplied invalid parameters. + */ +#define IX_TIMERCTRL_PARAM_ERROR 3 + + +/* + * Typedefs whose scope is limited to this file. + */ + +/** + * @ingroup IxTimerCtrl + * + * @brief A typedef for a pointer to a timer callback function. + * @para void * - This parameter is supplied by the client when the + * timer is started and passed back to the client in the callback. + * @note in general timer callback functions should not block or + * take longer than 100ms. This constraint is required to ensure that + * higher priority callbacks are not held up. + * All callbacks are called from the same thread. + * This thread is a shared resource. + * The parameter passed is provided when the timer is scheduled. + */ +typedef void (*IxTimerCtrlTimerCallback)(void *userParam); + + +/** + * @ingroup IxTimerCtrl + * + * @brief List used to identify the users of timers. + * @note The order in this list indicates priority. Components appearing + * higher in the list will be given priority over components lower in the + * list. When adding components, please insert at an appropriate position + * for priority ( i.e values should be less than IxTimerCtrlMaxPurpose ) . + */ +typedef enum +{ + IxTimerCtrlAdslPurpose, + /* Insert new purposes above this line only + */ + IxTimerCtrlMaxPurpose +} +IxTimerCtrlPurpose; + + +/* + * Function definition + */ + +/** + * @ingroup IxTimerCtrl + * + * @fn ixTimerCtrlSchedule(IxTimerCtrlTimerCallback func, + void *userParam, + IxTimerCtrlPurpose purpose, + UINT32 relativeTime, + unsigned *timerId ) + * + * @brief Schedules a callback function to be called after a period of "time". + * The callback function should not block or run for more than 100ms. + * This function + * + * @param func @ref IxTimerCtrlTimerCallback [in] - the callback function to be called. + * @param userParam void [in] - a parameter to send to the callback function, can be NULL. + * @param purpose @ref IxTimerCtrlPurpose [in] - the purpose of the callback, internally this component will + * decide the priority of callbacks with different purpose. + * @param relativeTime UINT32 [in] - time relative to now in milliseconds after which the callback + * will be called. The time must be greater than the duration of one OS tick. + * @param *timerId unsigned [out] - An id for the callback scheduled. + * This id can be used to cancel the callback. + * @return + * @li IX_SUCCESS - The timer was started successfully. + * @li IX_TIMERCTRL_NO_FREE_TIMERS - The timer was not started because the maximum number + * of running timers has been exceeded. + * @li IX_TIMERCTRL_PARAM_ERROR - The timer was not started because the client has supplied + * a NULL callback func, or the requested timeout is less than one OS tick. + * @note This function is re-entrant. The function accesses a list of running timers + * and may suspend the calling thread if this list is being accesed by another thread. + */ +PUBLIC IX_STATUS +ixTimerCtrlSchedule(IxTimerCtrlTimerCallback func, + void *userParam, + IxTimerCtrlPurpose purpose, + UINT32 relativeTime, + unsigned *timerId ); + + +/** + * @ingroup IxTimerCtrl + * + * @fn ixTimerCtrlScheduleRepeating(IxTimerCtrlTimerCallback func, + void *param, + IxTimerCtrlPurpose purpose, + UINT32 interval, + unsigned *timerId ) + * + * @brief Schedules a callback function to be called after a period of "time". + * The callback function should not block or run for more than 100ms. + * + * @param func @ref IxTimerCtrlTimerCallback [in] - the callback function to be called. + * @param userParam void [in] - a parameter to send to the callback function, can be NULL. + * @param purpose @ref IxTimerCtrlPurpose [in] - the purpose of the callback, internally this component will + * decide the priority of callbacks with different purpose. + * @param interval UINT32 [in] - the interval in milliseconds between calls to func. + * @param timerId unsigned [out] - An id for the callback scheduled. + * This id can be used to cancel the callback. + * @return + * @li IX_SUCCESS - The timer was started successfully. + * @li IX_TIMERCTRL_NO_FREE_TIMERS - The timer was not started because the maximum number + * of running timers has been exceeded. + * @li IX_TIMERCTRL_PARAM_ERROR - The timer was not started because the client has supplied + * a NULL callback func, or the requested timeout is less than one OS tick. + * @note This function is re-entrant. The function accesses a list of running timers + * and may suspend the calling thread if this list is being accesed by another thread. + */ +PUBLIC IX_STATUS +ixTimerCtrlScheduleRepeating(IxTimerCtrlTimerCallback func, + void *param, + IxTimerCtrlPurpose purpose, + UINT32 interval, + unsigned *timerId ); + +/** + * @ingroup IxTimerCtrl + * + * @fn ixTimerCtrlCancel (unsigned id) + * + * @brief Cancels a scheduled callback. + * + * @param id unsigned [in] - the id of the callback to be cancelled. + * @return + * @li IX_SUCCESS - The timer was successfully stopped. + * @li IX_FAIL - The id parameter did not corrrespond to any running timer.. + * @note This function is re-entrant. The function accesses a list of running timers + * and may suspend the calling thread if this list is being accesed by another thread. + */ +PUBLIC IX_STATUS +ixTimerCtrlCancel (unsigned id); + +/** + * @ingroup IxTimerCtrl + * + * @fn ixTimerCtrlInit(void) + * + * @brief Initialise the Timer Control Component. + * @return + * @li IX_SUCCESS - The timer control component initialized successfully. + * @li IX_FAIL - The timer control component initialization failed, + * or the component was already initialized. + * @note This must be done before any other API function is called. + * This function should be called once only and is not re-entrant. + */ +PUBLIC IX_STATUS +ixTimerCtrlInit(void); + + +/** + * @ingroup IxTimerCtrl + * + * @fn ixTimerCtrlShow( void ) + * + * @brief Display the status of the Timer Control Component. + * @return void + * @note Displays a list of running timers. + * This function is not re-entrant. This function does not suspend the calling thread. + */ +PUBLIC void +ixTimerCtrlShow( void ); + +#endif /* IXTIMERCTRL_H */ + |