diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 23:15:20 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 23:15:20 +0000 |
commit | 842db5f391f323b49ff2fc6157f89135d4662506 (patch) | |
tree | 3a30015625c2caa01e470b72fd98874663c2485f /cpukit/rtems/src/partcreate.c | |
parent | Split Timer Manager into one routine per file. (diff) | |
download | rtems-842db5f391f323b49ff2fc6157f89135d4662506.tar.bz2 |
Split Partition Manager into one routine per file.
Diffstat (limited to 'cpukit/rtems/src/partcreate.c')
-rw-r--r-- | cpukit/rtems/src/partcreate.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/cpukit/rtems/src/partcreate.c b/cpukit/rtems/src/partcreate.c new file mode 100644 index 0000000000..5c3098f02f --- /dev/null +++ b/cpukit/rtems/src/partcreate.c @@ -0,0 +1,116 @@ +/* + * Partition Manager + * + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include <rtems/system.h> +#include <rtems/rtems/status.h> +#include <rtems/rtems/support.h> +#include <rtems/score/address.h> +#include <rtems/score/object.h> +#include <rtems/rtems/part.h> +#include <rtems/score/thread.h> +#include <rtems/score/sysstate.h> + +/*PAGE + * + * rtems_partition_create + * + * This directive creates a partiton of fixed sized buffers from the + * given contiguous memory area. + * + * Input parameters: + * name - user defined partition name + * starting_address - physical start address of partition + * length - physical length in bytes + * buffer_size - size of buffers in bytes + * attribute_set - partition attributes + * id - pointer to partition id + * + * Output parameters: + * id - partition id + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + */ + +rtems_status_code rtems_partition_create( + rtems_name name, + void *starting_address, + unsigned32 length, + unsigned32 buffer_size, + rtems_attribute attribute_set, + Objects_Id *id +) +{ + register Partition_Control *the_partition; + + if ( !rtems_is_name_valid( name ) ) + return RTEMS_INVALID_NAME; + + if ( length == 0 || buffer_size == 0 || length < buffer_size || + !_Partition_Is_buffer_size_aligned( buffer_size ) ) + return RTEMS_INVALID_SIZE; + + if ( !_Addresses_Is_aligned( starting_address ) ) + return RTEMS_INVALID_ADDRESS; + +#if defined(RTEMS_MULTIPROCESSING) + if ( _Attributes_Is_global( attribute_set ) && + !_System_state_Is_multiprocessing ) + return RTEMS_MP_NOT_CONFIGURED; +#endif + + _Thread_Disable_dispatch(); /* prevents deletion */ + + the_partition = _Partition_Allocate(); + + if ( !the_partition ) { + _Thread_Enable_dispatch(); + return RTEMS_TOO_MANY; + } + +#if defined(RTEMS_MULTIPROCESSING) + if ( _Attributes_Is_global( attribute_set ) && + !( _Objects_MP_Allocate_and_open( &_Partition_Information, name, + the_partition->Object.id, FALSE ) ) ) { + _Partition_Free( the_partition ); + _Thread_Enable_dispatch(); + return RTEMS_TOO_MANY; + } +#endif + + the_partition->starting_address = starting_address; + the_partition->length = length; + the_partition->buffer_size = buffer_size; + the_partition->attribute_set = attribute_set; + the_partition->number_of_used_blocks = 0; + + _Chain_Initialize( &the_partition->Memory, starting_address, + length / buffer_size, buffer_size ); + + _Objects_Open( &_Partition_Information, &the_partition->Object, &name ); + + *id = the_partition->Object.id; +#if defined(RTEMS_MULTIPROCESSING) + if ( _Attributes_Is_global( attribute_set ) ) + _Partition_MP_Send_process_packet( + PARTITION_MP_ANNOUNCE_CREATE, + the_partition->Object.id, + name, + 0 /* Not used */ + ); +#endif + + _Thread_Enable_dispatch(); + return RTEMS_SUCCESSFUL; +} |