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[gb-231r1-is01/GB_2.3_IS01.git] / system / wlan / ti / wilink_6_1 / stad / src / Sta_Management / scr.h
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+/*
+ * scr.h
+ *
+ * Copyright(c) 1998 - 2009 Texas Instruments. All rights reserved.      
+ * All rights reserved.                                                  
+ *                                                                       
+ * Redistribution and use in source and binary forms, with or without    
+ * modification, are permitted provided that the following conditions    
+ * are met:                                                              
+ *                                                                       
+ *  * Redistributions of source code must retain the above copyright     
+ *    notice, this list of conditions and the following disclaimer.      
+ *  * 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.                                                      
+ *  * Neither the name Texas Instruments nor the names of its            
+ *    contributors may be used to endorse or promote products derived    
+ *    from this software without specific prior written permission.      
+ *                                                                       
+ * 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.
+ */
+
+/** \file  scr.h
+ *  \brief This file includes internal (private) definitions to the SCR module
+ *
+ *  \see   scrApi.h, scr.c
+ */
+
+
+#ifndef __SCR_H__
+#define __SCR_H__
+
+#include "scrApi.h"
+
+/*
+ ***********************************************************************
+ *  Constant definitions.
+ ***********************************************************************
+ */
+
+ /*
+ ***********************************************************************
+ *  Enums.
+ ***********************************************************************
+ */
+
+/** \enum EScrClientState 
+ * \brief enumerates the different states a client may be in .\n
+ */
+typedef enum
+{
+    SCR_CS_IDLE = 0,    /**< client is idle */
+    SCR_CS_PENDING,     /**< client is pending to use the channel */
+    SCR_CS_RUNNING,     /**< client is using the channel */
+    SCR_CS_ABORTING     /**< 
+                         * client was using the channel, but was aborted, 
+                         * and complete notification is expected.
+                         */
+} EScrClientState;
+
+
+/*
+ ***********************************************************************
+ *  Typedefs.
+ ***********************************************************************
+ */
+
+/*
+ ***********************************************************************
+ *  Structure definitions.
+ ***********************************************************************
+ */
+
+/** \struct TScrClient
+ * \brief This structure contains information for a specific client
+ */
+typedef struct
+{
+    EScrClientState     state[ SCR_RESOURCE_NUM_OF_RESOURCES ];     /**< the client current state, per resource */
+    TScrCB              clientRequestCB;                            /**< the client's callback function */
+    TI_HANDLE           ClientRequestCBObj;                         /**< the client's object */
+    EScePendReason      currentPendingReason[ SCR_RESOURCE_NUM_OF_RESOURCES ];
+                                                                    /**< 
+                                                                     * the reason why this client is pending
+                                                                     * (if at all)
+                                                                     */
+} TScrClient;
+
+/** \struct TScr
+ * \brief This structure contains the SCR object data
+ */
+typedef struct
+{
+    TI_HANDLE               hOS;                                    /**< a handle to the OS object */
+    TI_HANDLE               hReport;                                /**< a handle to the report object */
+    TI_BOOL                 statusNotficationPending;               /**< 
+                                                                     * whether the SCR is in the process of  
+                                                                     * notifying a status change to a client
+                                                                     * (used to solve re-entrance problem)
+                                                                     */
+    EScrClientId            runningClient[ SCR_RESOURCE_NUM_OF_RESOURCES ];
+                                                                    /**< 
+                                                                     * The index of the current running client 
+                                                                     * (SCR_CID_NO_CLIENT if none), per resource
+                                                                     */
+    EScrGroupId             currentGroup;                           /**< the current group */
+    EScrModeId              currentMode;                            /**< the current mode */
+    TScrClient              clientArray[ SCR_CID_NUM_OF_CLIENTS ];  /**< array holding all clients' info */
+} TScr;
+
+
+/*
+ ***********************************************************************
+ *  External functions definitions
+ ***********************************************************************
+ */
+/**
+ * \\n
+ * \date 01-Dec-2004\n
+ * \brief Searches the client database for a client with matching state, from startFrom to endAt\n
+ *
+ * Function Scope \e Private.\n
+ * \param hScr - handle to the SCR object.\n
+ * \param requiredState - the state to match.\n
+ * \param eResource - the resource to macth.\n
+ * \param startFrom - the highest priority to begin searching from.\n
+ * \param endAt - the lowest priority to include in the search.\n
+ * \return the client ID if found, SCR_CID_NO_CLIENT if not found.\n
+ */
+EScrClientId scrFindHighest( TI_HANDLE hScr,
+                             EScrClientState requiredState,
+                             EScrResourceId eResource,
+                             TI_UINT32 startFrom,
+                             TI_UINT32 endAt );
+
+#endif /* __SCR_H__ */