--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/riviera/rvm/rvm_mem.c	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,300 @@
+/**
+ *                                                                          
+ *  @file	rvm_mem.c                                              
+ *                                                                          
+ *  This file contains the functions related to memory management within RVM.
+ *
+ * @author	David Lamy-Charrier (d-lamy@ti.com)	
+ * @version	0.1
+ *
+ */
+
+/*
+ * Revision History:																			
+ *
+ * 10/26/2001	David Lamy-Charrier		Create for Riviera 1.6.
+ *																			
+ * (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved
+ */
+
+#include "rvm/rvm_i.h"
+#include "rvm/rvm_gen.h"
+#include "rvm/rvm_api.h"
+#include "rvm/rvm_use_id_list.h"
+#include "rvf/rvf_env.h"
+
+extern T_RVM_GET_INFO_FUNC RVM_SWE_GET_INFO_ARRAY[];
+
+extern T_RVM_KNOWN_SWE	* rvm_swe_array;
+
+/*******************************************************************************
+** Function         rvm_delete_used_memory
+**
+** Description      Internal function which deletes used local mem if an error
+**                  was received or at the end of the start/stop process.
+**					
+*******************************************************************************/
+T_RVM_RETURN rvm_delete_used_memory ( T_RVM_PROCESSING_SWE * appli)
+{
+	T_RVF_BUFFER_Q			buffer_to_free_q = {0, 0, 0};
+	T_RVM_PROCESSING_SWE		* cur_elem = appli;
+
+	while (cur_elem != NULL)
+	{
+		rvf_enqueue (&buffer_to_free_q, cur_elem);
+		cur_elem = cur_elem->next_swe;
+	}
+
+	while (buffer_to_free_q.p_first)
+	{
+		rvf_free_buf (rvf_dequeue (&buffer_to_free_q));
+	}
+
+	return RVM_OK;
+}
+
+
+/*******************************************************************************
+** Function         rvm_delete_created_mb
+**
+** Description      Internal function which deletes all created MB if an error
+**                  was received, or in case application has to be stopped.
+**
+*******************************************************************************/
+T_RVM_RETURN rvm_delete_created_mb (T_RVM_PROCESSING_SWE * appli)
+{
+	UINT8 mb_index;
+	T_RVM_PROCESSING_SWE * cur_elem = appli;
+	volatile T_RV_RET ret_value = RV_OK;
+	UINT8 mb_to_delete;
+
+	while (cur_elem != NULL )
+	{
+		UINT8 swe_index = cur_elem->swe_id;
+
+		/*	If more than one appli is using this SWE, cannot delete MB
+			Process to the next SWE. */
+		if (rvm_swe_array[swe_index].nb_using_appli > 1)
+		{	
+			cur_elem = cur_elem->next_swe; /* process the next SWE */ 
+			continue;
+		}
+
+		/*	If the state is running, it means that this SWE has not
+			to be stopped. */
+		if (rvm_swe_array[swe_index].swe_state == SWE_RUNNING)
+		{
+			cur_elem = cur_elem->next_swe; /* process the next SWE */
+			continue;
+		}
+
+		/* We're here:
+			- either because swe_state == SWE_NOT_STARTED => error in starting prcess
+			- either because swe_state == SWE_STOPPING => regular stopping process */
+
+		if (cur_elem->nb_created_mb == 0)
+		{
+			cur_elem = cur_elem->next_swe; /* process the next SWE */
+			continue;
+		}
+
+		mb_to_delete = cur_elem->nb_created_mb;
+
+		for( mb_index = 0; mb_index < mb_to_delete; mb_index++)
+		{
+			ret_value = rvf_delete_mb(cur_elem->swe_mem_bank[mb_index].mb_name);
+			if (ret_value != RV_OK)
+			{
+				rvf_send_trace("RVM: Error in deletion of memory bank: ", 39, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
+				rvf_send_trace(cur_elem->swe_mem_bank[mb_index].mb_name, RVF_MAX_MB_LEN, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
+			}
+			else
+			{
+				(cur_elem->nb_created_mb)--;
+			}
+
+			ret_value = RVM_OK;
+		}
+
+		cur_elem = cur_elem->next_swe; /* process the next SWE */ 
+	}
+
+	return ret_value;
+}
+
+/*******************************************************************************
+**
+** Function         rvm_check_memory_requirement
+**
+** Description      This function checks if there is enough memory 
+**					to start a SWE(and all the linked SWEs)
+**
+** Parameters:		T_RVM_PROCESSING_SWE * appli: list of required SWEs with their parameters.
+**
+** Returns          T_RVM_RETURN: RVM_OK if there is enough memory, else RVM_MEMORY_ERR.
+**
+*******************************************************************************/
+T_RVM_RETURN rvm_verify_memory_requirement( T_RVM_PROCESSING_SWE * appli,
+										    T_RVM_GROUP_DIRECTIVE* gd, 
+											UINT8 cnt) {	
+	T_RVM_PROCESSING_SWE * cur_swe = appli;
+	UINT32 required_mem = 0;
+	UINT32 total_mem = 0;
+	UINT32 used_mem = 0;
+	UINT8 mb_index;
+	UINT8 i=0;
+	UINT16 host_task_mem=0;
+
+
+	/* get available memory from the rvf */
+	if ( rvf_get_available_mem( &total_mem, &used_mem) != RVF_OK )
+	{	return RVM_MEMORY_ERR;
+	}
+
+	/* count required memory */
+	while (cur_swe !=NULL ) /* for each SWE */
+	{
+		UINT8 swe_index = cur_swe->swe_id;
+
+		/*
+		** If SWE is already running => MB already created => do nothing
+		*/
+		if (rvm_swe_array[swe_index].swe_state != SWE_RUNNING )
+		{
+			for( mb_index = 0; mb_index < cur_swe->nb_requested_mb; mb_index++) /* for each mb */
+			{	
+				required_mem += cur_swe->swe_mem_bank[mb_index].mb_initial_param.size;
+			}
+
+			/* add the necessary stack sizes */
+			/* TO DO: add the stack size for host groups not yet started */
+			if( (cur_swe->swe_type == RVM_SWE_TYPE_3)
+				|| (cur_swe->swe_type == RVM_SWE_TYPE_4) )
+/*				|| ((cur_swe->swe_type == RVM_SWE_TYPE_2) && (rvm_swe_array[swe_index].group_index == RVM_OWN_GROUP) )) */
+			{	
+				required_mem += rvm_swe_array[swe_index].swe_stack_size;
+				required_mem += SYSTEM_TASK_MEM;  /* only for type 3 & 4. A-M-E-N-D-E-D!    */
+			}
+
+		}
+		cur_swe = cur_swe->next_swe;
+	}
+
+	/* type 2 group host system and stack mem. is catered for here								*/
+	for(i=0; i<cnt; i++) host_task_mem+=gd[i].stack_size;			/* A-M-E-N-D-E-D!  */
+	host_task_mem+=(cnt*SYSTEM_TASK_MEM);
+	
+	/* compare available memory and required memory (eventually, use a percentage to improve performances) */
+	if ((required_mem+host_task_mem) + used_mem > total_mem ) { 	/* A-M-E-N-D-E-D!  */
+		RVM_TRACE_WARNING_PARAM("RVM: Memory required (incl. used): ", (UINT32)(required_mem+host_task_mem+ used_mem) );
+		RVM_TRACE_WARNING_PARAM("RVM: Total Memory available      : ", (UINT32)total_mem);
+		return RVM_MEMORY_ERR;
+	} else{
+		return RVM_OK;
+	}
+}
+
+
+/*******************************************************************************
+**
+** Function         rvm_allocate_mem
+**
+** Description      This function creates all the required memory banks or
+**					increases their size if needed, to start a SWE. 
+**
+** Parameters:		T_RVM_PROCESSING_SWE * appli: list of required SWEs with their parameters.
+**
+** Returns          T_RVM_RETURN: RVM_OK if all allocations are successful, 
+**					else RVM_MEMORY_ERR and it releases all the allocated memory.
+**
+*******************************************************************************/
+T_RVM_RETURN rvm_allocate_mb( T_RVM_PROCESSING_SWE * appli)
+{	T_RVM_PROCESSING_SWE * cur_swe = appli;
+	UINT8 mb_index;
+	volatile T_RVM_RETURN rvm_ret_value = RVM_OK;
+	
+	/* for each SWE in the list */
+	while ((cur_swe != NULL ) && (rvm_ret_value == RVM_OK))
+	{
+		UINT8 swe_index = cur_swe->swe_id;
+
+		if (rvm_swe_array[swe_index].swe_state == SWE_NOT_STARTED) 
+			/* If the state is not SWE_RUNNING, then the MBs have to be created	*/
+		{
+			for( mb_index = 0; mb_index < cur_swe->nb_requested_mb; mb_index++) /* for each mb */
+			{	T_RVF_MB_PARAM mb_param;
+				/* add the initial size */
+				mb_param.size = cur_swe->swe_mem_bank[mb_index].mb_initial_param.size;
+				mb_param.watermark = cur_swe->swe_mem_bank[mb_index].mb_initial_param.watermark;
+
+				/* create the mb */
+				if ( mb_param.size != 0)
+				{	
+					/* create the mb */
+					if ( rvf_create_mb( cur_swe->swe_mem_bank[mb_index].mb_name, mb_param, &(cur_swe->bk_id_table[mb_index]) ) != RVF_OK)
+					{
+						/* if an error occurs */
+						rvm_ret_value = RVM_MEMORY_ERR;
+						break;
+					}
+					else
+					{
+						cur_swe->nb_created_mb++;
+					}
+				}
+			}
+		}
+
+		cur_swe = cur_swe->next_swe; /* process the next SWE */ 
+	}
+
+	if (rvm_ret_value != RVM_OK)
+		/* Something went wrong, should release all used memory */
+	{
+		rvf_send_trace("RVM: Problem in memory bank creation !!!", 40, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
+		if (rvm_delete_created_mb (appli) != RVM_OK)
+		{
+			rvf_send_trace("RVM: MB deleting error!!!", 25, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
+		}
+
+	}
+	return rvm_ret_value;
+}
+
+
+/*******************************************************************************
+**
+** Function         rvm_allocate_stack_buffer
+**
+** Description      This function allocates a buffer for the stack of a new 
+**					task created by RVM.
+**
+** Parameters:		UINT32 stack_size: size of stack.
+**					T_RVF_BUFFER** stack_ptr: pointer to the allocated buffer.
+**
+** Returns          T_RVM_RETURN: RVM_OK if all allocation is successful, 
+**					else RVM_MEMORY_ERR.
+**
+*******************************************************************************/
+T_RVM_RETURN rvm_allocate_stack_buffer( UINT32 stack_size, T_RVF_BUFFER** stack_ptr )
+{	T_RVF_MB_PARAM mb_params;
+
+	/* increase the size of the stack MB before allocating the new buffer */
+	if( rvf_get_mb_param( RVM_STACK_MB, &mb_params) != RV_OK)
+	{	return RVM_MEMORY_ERR;
+	}
+	
+	mb_params.size		+= stack_size;
+	mb_params.watermark	+= stack_size;
+
+	if( rvf_set_mb_param( RVM_STACK_MB, &mb_params) != RV_OK)
+	{	return RVM_MEMORY_ERR;
+	}
+
+	if( rvf_get_buf( rvm_stack_mem_bank, stack_size, stack_ptr) == RVF_RED)
+	{	return RVM_MEMORY_ERR;
+	}
+	return RVM_OK;
+
+}
+