+
−/*************************************************************************/
+
−/*                                                                       */
+
−/*               Copyright Mentor Graphics Corporation 2002              */
+
−/*                         All Rights Reserved.                          */
+
−/*                                                                       */
+
−/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS  */
+
−/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS   */
+
−/* SUBJECT TO LICENSE TERMS.                                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FILE NAME                                               VERSION       */
+
−/*                                                                       */
+
−/*      pmce.c                                         Nucleus PLUS 1.14 */
+
−/*                                                                       */
+
−/* COMPONENT                                                             */
+
−/*                                                                       */
+
−/*      PM - Partition Memory Management                                 */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This file contains the error checking routines for the functions */
+
−/*      in the Partition component.  This permits easy removal of error  */
+
−/*      checking logic when it is not needed.                            */
+
−/*                                                                       */
+
−/* DATA STRUCTURES                                                       */
+
−/*                                                                       */
+
−/*      None                                                             */
+
−/*                                                                       */
+
−/* FUNCTIONS                                                             */
+
−/*                                                                       */
+
−/*      PMCE_Create_Partition_Pool          Create a Partition Pool      */
+
−/*      PMCE_Delete_Partition_Pool          Delete a Partition Pool      */
+
−/*      PMCE_Allocate_Partition             Allocate a partition from a  */
+
−/*                                            pool                       */
+
−/*      PMCE_Deallocate_Partition           Deallocate a partition from  */
+
−/*                                            a pool                     */
+
−/*                                                                       */
+
−/* DEPENDENCIES                                                          */
+
−/*                                                                       */
+
−/*      cs_extr.h                           Common Service functions     */
+
−/*      tc_extr.h                           Thread Control functions     */
+
−/*      pm_extr.h                           Partition functions          */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*        DATE                    REMARKS                                */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      03-01-1994      Changed name original error                      */
+
−/*                      checking file and changed                        */
+
−/*                      function interfaces, resulting                   */
+
−/*                      in version 1.1                                   */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*      04-17-1996      updated to version 1.2                           */
+
−/*      03-24-1998      Released version 1.3                             */
+
−/*      04-17-2002      Released version 1.13m                           */
+
−/*      11-07-2002      Released version 1.14                            */
+
−/*************************************************************************/
+
−#define         NU_SOURCE_FILE
+
−
+
−
+
−#include        "cs_extr.h"                 /* Common service functions  */
+
−#include        "tc_extr.h"                 /* Thread control functions  */
+
−#include        "pm_extr.h"                 /* Partition functions       */
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMCE_Create_Partition_Pool                                       */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function performs error checking on the parameters supplied */
+
−/*      to the create partition pool function.                           */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      PMC_Create_Partition_Pool           Actual create partition pool */
+
−/*                                            function                   */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      pool_ptr                            Partition pool control block */
+
−/*                                            pointer                    */
+
−/*      name                                Partition pool name          */
+
−/*      start_address                       Starting address of the pool */
+
−/*      pool_size                           Number of bytes in the pool  */
+
−/*      partition_size                      Number of bytes in each      */
+
−/*                                            partition of the pool      */
+
−/*      suspend_type                        Suspension type              */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      NU_INVALID_POOL                     Pool control block pointer   */
+
−/*                                            is NULL                    */
+
−/*      NU_INVALID_MEMORY                   Pool starting address is NULL*/
+
−/*      NU_INVALID_SIZE                     Partition size is 0 or it is */
+
−/*                                            larger than the pool area  */
+
−/*      NU_INVALID_SUSPEND                  Suspension selection is not  */
+
−/*                                            valid                      */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*         DATE                    REMARKS                               */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      03-01-1994      Modified function interface,                     */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−STATUS  PMCE_Create_Partition_Pool(NU_PARTITION_POOL *pool_ptr, CHAR *name,
+
−                        VOID *start_address, UNSIGNED pool_size, 
+
−                        UNSIGNED partition_size, OPTION suspend_type)
+
−{
+
−
+
−PM_PCB         *pool;                       /* Pool control block ptr    */
+
−STATUS          status;                     /* Completion status         */
+
−UNSIGNED        size;                       /* Adjusted size of partition*/
+
−
+
−
+
−    /* Move input pool pointer into internal pointer.  */
+
−    pool =  (PM_PCB *) pool_ptr;
+
−
+
−    /* Adjust the partition size to something that is evenly divisible by
+
−       the number of bytes in an UNSIGNED data type.  */
+
−    size =  ((partition_size + sizeof(UNSIGNED) - 1)/sizeof(UNSIGNED)) *
+
−                sizeof(UNSIGNED);
+
−
+
−    /* Check for a NULL partition pool control block pointer or a control
+
−       block that is already created.  */
+
−    if ((pool == NU_NULL) || (pool -> pm_id == PM_PARTITION_ID))
+
−    
+
−        /* Invalid partition pool control block pointer.  */
+
−        status =  NU_INVALID_POOL;
+
−        
+
−    else if (start_address == NU_NULL)
+
−    
+
−        /* Invalid memory pointer.  */
+
−        status =  NU_INVALID_MEMORY;
+
−        
+
−    else if ((size == 0) || ((size + PM_OVERHEAD) > pool_size))
+
−    
+
−        /* Pool could not even accommodate one partition.  */
+
−        status =  NU_INVALID_SIZE;
+
−        
+
−    else if ((suspend_type != NU_FIFO) && (suspend_type != NU_PRIORITY))
+
−    
+
−        /* Invalid suspension type.  */
+
−        status =  NU_INVALID_SUSPEND;
+
−        
+
−    else
+
−    
+
−        /* Call the actual service to create the partition pool.  */
+
−        status =  PMC_Create_Partition_Pool(pool_ptr, name, start_address, 
+
−                                pool_size, partition_size, suspend_type);
+
−        
+
−    /* Return completion status.  */
+
−    return(status);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMCE_Delete_Partition_Pool                                       */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function performs error checking on the parameters supplied */
+
−/*      to the delete partition pool function.                           */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      PMC_Delete_Partition_Pool           Actual function to delete a  */
+
−/*                                            partition pool             */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      pool_ptr                            Partition pool control block */
+
−/*                                            pointer                    */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      NU_INVALID_POOL                     Indicates the supplied pool  */
+
−/*                                            pointer is invalid         */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*         DATE                    REMARKS                               */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      03-01-1994      Modified function interface,                     */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−STATUS  PMCE_Delete_Partition_Pool(NU_PARTITION_POOL *pool_ptr)
+
−{
+
−
+
−PM_PCB         *pool;                       /* Pool control block ptr    */
+
−STATUS          status;                     /* Completion status         */
+
−
+
−
+
−    /* Move input pool pointer into internal pointer.  */
+
−    pool =  (PM_PCB *) pool_ptr;
+
−
+
−    /* Determine if the partition pool pointer is valid.  */
+
−    if ((pool) && (pool -> pm_id == PM_PARTITION_ID))
+
−    
+
−        /* Partition pool pointer is valid, call function to delete it.  */
+
−        status =  PMC_Delete_Partition_Pool(pool_ptr);
+
−        
+
−    else
+
−    
+
−        /* Partition pool pointer is invalid, indicate in completion status. */
+
−        status =  NU_INVALID_POOL;
+
−        
+
−    /* Return completion status.  */
+
−    return(status);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMCE_Allocate_Partition                                          */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function performs error checking on the parameters supplied */
+
−/*      to the allocate partition function.                              */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      PMC_Allocate_Partition              Actual partition allocate    */
+
−/*                                            function                   */
+
−/*      TCCE_Suspend_Error                  Check for a task suspension  */
+
−/*                                            error                      */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      pool_ptr                            Memory partition pool pointer*/
+
−/*      return_pointer                      Pointer to the destination   */
+
−/*                                            memory pointer             */
+
−/*      suspend                             Suspension option if full    */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      NU_INVALID_POOL                     Indicates the pool pointer   */
+
−/*                                            is invalid                 */
+
−/*      NU_INVALID_POINTER                  Indicates the return pointer */
+
−/*                                            is NULL                    */
+
−/*      NU_INVALID_SUSPEND                  Indicates the suspension is  */
+
−/*                                            invalid                    */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*        DATE                    REMARKS                                */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      03-01-1994      Modified function interface,                     */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−STATUS  PMCE_Allocate_Partition(NU_PARTITION_POOL *pool_ptr, 
+
−                             VOID **return_pointer, UNSIGNED suspend)
+
−{
+
−
+
−PM_PCB         *pool;                       /* Pool control block ptr    */
+
−STATUS          status;                     /* Completion status         */
+
−
+
−
+
−    /* Move input pool pointer into internal pointer.  */
+
−    pool =  (PM_PCB *) pool_ptr;
+
−
+
−    /* Determine if partition pool pointer is invalid.  */
+
−    if (pool == NU_NULL)
+
−    
+
−        /* Partition pool pointer is invalid, indicate in completion status. */
+
−        status =  NU_INVALID_POOL;
+
−
+
−    else if (pool -> pm_id != PM_PARTITION_ID)
+
−    
+
−        /* Partition pool pointer is invalid, indicate in completion status. */
+
−        status =  NU_INVALID_POOL;
+
−
+
−    else if (return_pointer == NU_NULL)
+
−
+
−        /* Return pointer is invalid.  */
+
−        status =  NU_INVALID_POINTER;
+
−        
+
−    else if ((suspend) && (TCCE_Suspend_Error()))
+
−    
+
−        /* Suspension from a non-task thread.  */
+
−        status =  NU_INVALID_SUSPEND;
+
−
+
−    else 
+
−    
+
−        /* Parameters are valid, call actual function.  */
+
−        status =  PMC_Allocate_Partition(pool_ptr, return_pointer, suspend);
+
−
+
−    /* Return the completion status.  */
+
−    return(status);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMCE_Deallocate_Partition                                        */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function performs error checking on the parameters supplied */
+
−/*      to the deallocate partition function.                            */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      PMC_Deallocate_Partition            Deallocate a partition       */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      partition                           Pointer to partition memory  */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      NU_INVALID_POINTER                  Indicates the supplied       */
+
−/*                                            partition pointer is NULL, */
+
−/*                                            or otherwise invalid.      */
+
−/*      NU_SUCCESS                                                       */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*        DATE                    REMARKS                                */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      03-01-1994      Modified function interface,                     */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−STATUS  PMCE_Deallocate_Partition(VOID *partition)
+
−{
+
−
+
−PM_PCB         *pool;                       /* Pool pointer              */
+
−PM_HEADER      *header_ptr;                 /* Pointer to partition hdr  */
+
−STATUS          status;                     /* Completion status         */
+
−
+
−
+
−    /* Pickup the associated pool's pointer.  It is inside the header of
+
−       each partition.  */
+
−    header_ptr =  (PM_HEADER *) (((BYTE_PTR) partition) - PM_OVERHEAD);
+
−        
+
−    /* Determine if the pointer(s) are NULL.  */
+
−    if ((header_ptr == NU_NULL) || (partition == NU_NULL))
+
−    
+
−        /* Partition pointer is invalid.  */
+
−        status =  NU_INVALID_POINTER;
+
−
+
−    /* Determine if partition pool pointer is invalid.  */
+
−    else if ((pool =  header_ptr -> pm_partition_pool) == NU_NULL)
+
−    
+
−        /* Partition pointer is invalid, indicate in completion status.  */
+
−        status =  NU_INVALID_POINTER;
+
−
+
−    else if (pool -> pm_id != PM_PARTITION_ID)
+
−    
+
−        /* Partition pool pointer is invalid, indicate in completion status. */
+
−        status =  NU_INVALID_POINTER;
+
−        
+
−    else if (header_ptr -> pm_next_available)
+
−    
+
−        /* Partition is still linked on the available list- must not be
+
−           allocated.  */
+
−        status =  NU_INVALID_POINTER;
+
−
+
−    else 
+
−    
+
−        /* Parameters are valid, call actual function.  */
+
−        status =  PMC_Deallocate_Partition(partition);
+
−
+
−    /* Return the completion status.  */
+
−    return(status);
+
−}
+
−
+
−
+
−
+
−
+
−
+
−