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+/**
+ * @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 */
+