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view gsm-fw/nucleus/pmce.c @ 1000:36e3f6bf0156
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| author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
|---|---|
| date | Sun, 06 Mar 2016 21:38:21 +0000 |
| parents | afceeeb2cba1 |
| children |
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/*************************************************************************/ /* */ /* 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); }