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 RTEMSImplClassicDPMem |
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7 | * |
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8 | * @brief This source file contains the implementation of |
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9 | * rtems_port_create() and the Dual-Ported Memory Manager system |
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10 | * initialization. |
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11 | */ |
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12 | |
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13 | /* |
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14 | * COPYRIGHT (c) 1989-2014. |
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15 | * On-Line Applications Research Corporation (OAR). |
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16 | * |
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17 | * Redistribution and use in source and binary forms, with or without |
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18 | * modification, are permitted provided that the following conditions |
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19 | * are met: |
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20 | * 1. Redistributions of source code must retain the above copyright |
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21 | * notice, this list of conditions and the following disclaimer. |
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22 | * 2. Redistributions in binary form must reproduce the above copyright |
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23 | * notice, this list of conditions and the following disclaimer in the |
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24 | * documentation and/or other materials provided with the distribution. |
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25 | * |
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26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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27 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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30 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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31 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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32 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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33 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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34 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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35 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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36 | * POSSIBILITY OF SUCH DAMAGE. |
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37 | */ |
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38 | |
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39 | #ifdef HAVE_CONFIG_H |
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40 | #include "config.h" |
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41 | #endif |
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42 | |
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43 | #include <rtems/rtems/dpmemimpl.h> |
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44 | #include <rtems/rtems/status.h> |
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45 | #include <rtems/rtems/support.h> |
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46 | #include <rtems/score/address.h> |
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47 | #include <rtems/score/thread.h> |
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48 | #include <rtems/sysinit.h> |
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49 | |
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50 | rtems_status_code rtems_port_create( |
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51 | rtems_name name, |
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52 | void *internal_start, |
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53 | void *external_start, |
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54 | uint32_t length, |
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55 | rtems_id *id |
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56 | ) |
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57 | { |
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58 | Dual_ported_memory_Control *the_port; |
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59 | |
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60 | if ( !rtems_is_name_valid( name ) ) |
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61 | return RTEMS_INVALID_NAME; |
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62 | |
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63 | if ( !id ) |
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64 | return RTEMS_INVALID_ADDRESS; |
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65 | |
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66 | if ( !_Addresses_Is_aligned( internal_start ) || |
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67 | !_Addresses_Is_aligned( external_start ) ) |
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68 | return RTEMS_INVALID_ADDRESS; |
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69 | |
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70 | the_port = _Dual_ported_memory_Allocate(); |
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71 | |
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72 | if ( !the_port ) { |
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73 | _Objects_Allocator_unlock(); |
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74 | return RTEMS_TOO_MANY; |
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75 | } |
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76 | |
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77 | the_port->internal_base = internal_start; |
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78 | the_port->external_base = external_start; |
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79 | the_port->length = length - 1; |
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80 | |
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81 | *id = _Objects_Open_u32( |
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82 | &_Dual_ported_memory_Information, |
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83 | &the_port->Object, |
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84 | name |
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85 | ); |
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86 | _Objects_Allocator_unlock(); |
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87 | return RTEMS_SUCCESSFUL; |
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88 | } |
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89 | |
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90 | static void _Dual_ported_memory_Manager_initialization( void ) |
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91 | { |
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92 | _Objects_Initialize_information( &_Dual_ported_memory_Information ); |
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93 | } |
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94 | |
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95 | RTEMS_SYSINIT_ITEM( |
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96 | _Dual_ported_memory_Manager_initialization, |
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97 | RTEMS_SYSINIT_CLASSIC_DUAL_PORTED_MEMORY, |
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98 | RTEMS_SYSINIT_ORDER_MIDDLE |
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99 | ); |
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