1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup RTEMSImplClassicRegion |
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7 | * |
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8 | * @brief This source file contains the implementation of |
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9 | * rtems_region_create() and the Region Manager system initialization. |
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10 | */ |
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11 | |
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12 | /* |
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13 | * COPYRIGHT (c) 1989-1999. |
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14 | * On-Line Applications Research Corporation (OAR). |
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15 | * |
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16 | * Redistribution and use in source and binary forms, with or without |
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17 | * modification, are permitted provided that the following conditions |
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18 | * are met: |
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19 | * 1. Redistributions of source code must retain the above copyright |
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20 | * notice, this list of conditions and the following disclaimer. |
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21 | * 2. Redistributions in binary form must reproduce the above copyright |
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22 | * notice, this list of conditions and the following disclaimer in the |
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23 | * documentation and/or other materials provided with the distribution. |
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24 | * |
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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29 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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35 | * POSSIBILITY OF SUCH DAMAGE. |
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36 | */ |
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37 | |
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38 | #ifdef HAVE_CONFIG_H |
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39 | #include "config.h" |
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40 | #endif |
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41 | |
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42 | #include <rtems/rtems/regionimpl.h> |
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43 | #include <rtems/rtems/attrimpl.h> |
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44 | #include <rtems/rtems/support.h> |
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45 | #include <rtems/score/apimutex.h> |
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46 | #include <rtems/score/threadqimpl.h> |
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47 | #include <rtems/sysinit.h> |
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48 | |
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49 | rtems_status_code rtems_region_create( |
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50 | rtems_name name, |
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51 | void *starting_address, |
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52 | uintptr_t length, |
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53 | uintptr_t page_size, |
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54 | rtems_attribute attribute_set, |
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55 | rtems_id *id |
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56 | ) |
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57 | { |
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58 | rtems_status_code return_status; |
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59 | Region_Control *the_region; |
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60 | |
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61 | if ( !rtems_is_name_valid( name ) ) { |
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62 | return RTEMS_INVALID_NAME; |
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63 | } |
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64 | |
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65 | if ( id == NULL ) { |
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66 | return RTEMS_INVALID_ADDRESS; |
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67 | } |
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68 | |
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69 | if ( starting_address == NULL ) { |
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70 | return RTEMS_INVALID_ADDRESS; |
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71 | } |
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72 | |
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73 | the_region = _Region_Allocate(); |
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74 | |
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75 | if ( !the_region ) |
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76 | return_status = RTEMS_TOO_MANY; |
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77 | |
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78 | else { |
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79 | _Thread_queue_Object_initialize( &the_region->Wait_queue ); |
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80 | |
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81 | if ( _Attributes_Is_priority( attribute_set ) ) { |
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82 | the_region->wait_operations = &_Thread_queue_Operations_priority; |
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83 | } else { |
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84 | the_region->wait_operations = &_Thread_queue_Operations_FIFO; |
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85 | } |
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86 | |
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87 | the_region->maximum_segment_size = _Heap_Initialize( |
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88 | &the_region->Memory, starting_address, length, page_size |
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89 | ); |
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90 | |
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91 | if ( !the_region->maximum_segment_size ) { |
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92 | _Region_Free( the_region ); |
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93 | return_status = RTEMS_INVALID_SIZE; |
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94 | } else { |
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95 | the_region->attribute_set = attribute_set; |
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96 | |
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97 | *id = _Objects_Open_u32( |
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98 | &_Region_Information, |
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99 | &the_region->Object, |
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100 | name |
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101 | ); |
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102 | |
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103 | return_status = RTEMS_SUCCESSFUL; |
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104 | } |
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105 | } |
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106 | |
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107 | _Objects_Allocator_unlock(); |
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108 | |
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109 | return return_status; |
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110 | } |
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111 | |
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112 | static void _Region_Manager_initialization( void ) |
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113 | { |
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114 | _Objects_Initialize_information( &_Region_Information ); |
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115 | } |
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116 | |
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117 | RTEMS_SYSINIT_ITEM( |
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118 | _Region_Manager_initialization, |
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119 | RTEMS_SYSINIT_CLASSIC_REGION, |
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120 | RTEMS_SYSINIT_ORDER_MIDDLE |
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121 | ); |
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