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 RTEMSScoreSMP |
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7 | * |
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8 | * @brief This source file contains the implementation of |
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9 | * _SMP_Multicast_action(). |
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10 | */ |
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11 | |
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12 | /* |
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13 | * Copyright (C) 2019 embedded brains GmbH & Co. KG |
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14 | * |
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15 | * Redistribution and use in source and binary forms, with or without |
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16 | * modification, are permitted provided that the following conditions |
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17 | * are met: |
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18 | * 1. Redistributions of source code must retain the above copyright |
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19 | * notice, this list of conditions and the following disclaimer. |
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20 | * 2. Redistributions in binary form must reproduce the above copyright |
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21 | * notice, this list of conditions and the following disclaimer in the |
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22 | * documentation and/or other materials provided with the distribution. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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34 | * POSSIBILITY OF SUCH DAMAGE. |
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35 | */ |
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36 | |
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37 | #ifdef HAVE_CONFIG_H |
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38 | #include "config.h" |
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39 | #endif |
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40 | |
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41 | #include <rtems/score/smpimpl.h> |
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42 | #include <rtems/score/assert.h> |
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43 | |
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44 | typedef struct { |
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45 | Per_CPU_Job_context Context; |
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46 | Per_CPU_Job Jobs[ CPU_MAXIMUM_PROCESSORS ]; |
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47 | } SMP_Multicast_jobs; |
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48 | |
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49 | static void _SMP_Issue_action_jobs( |
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50 | const Processor_mask *targets, |
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51 | SMP_Multicast_jobs *jobs, |
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52 | uint32_t cpu_max |
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53 | ) |
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54 | { |
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55 | uint32_t cpu_index; |
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56 | |
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57 | for ( cpu_index = 0; cpu_index < cpu_max; ++cpu_index ) { |
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58 | if ( _Processor_mask_Is_set( targets, cpu_index ) ) { |
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59 | Per_CPU_Job *job; |
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60 | Per_CPU_Control *cpu; |
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61 | |
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62 | job = &jobs->Jobs[ cpu_index ]; |
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63 | job->context = &jobs->Context; |
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64 | cpu = _Per_CPU_Get_by_index( cpu_index ); |
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65 | |
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66 | _Per_CPU_Submit_job( cpu, job ); |
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67 | } |
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68 | } |
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69 | } |
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70 | |
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71 | static void _SMP_Wait_for_action_jobs( |
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72 | const Processor_mask *targets, |
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73 | const SMP_Multicast_jobs *jobs, |
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74 | uint32_t cpu_max |
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75 | ) |
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76 | { |
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77 | uint32_t cpu_index; |
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78 | |
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79 | for ( cpu_index = 0; cpu_index < cpu_max; ++cpu_index ) { |
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80 | if ( _Processor_mask_Is_set( targets, cpu_index ) ) { |
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81 | const Per_CPU_Control *cpu; |
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82 | const Per_CPU_Job *job; |
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83 | |
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84 | cpu = _Per_CPU_Get_by_index( cpu_index ); |
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85 | job = &jobs->Jobs[ cpu_index ]; |
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86 | _Per_CPU_Wait_for_job( cpu, job ); |
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87 | } |
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88 | } |
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89 | } |
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90 | |
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91 | void _SMP_Multicast_action( |
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92 | const Processor_mask *targets, |
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93 | SMP_Action_handler handler, |
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94 | void *arg |
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95 | ) |
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96 | { |
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97 | SMP_Multicast_jobs jobs; |
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98 | uint32_t cpu_max; |
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99 | |
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100 | cpu_max = _SMP_Get_processor_maximum(); |
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101 | _Assert( cpu_max <= RTEMS_ARRAY_SIZE( jobs.Jobs ) ); |
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102 | |
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103 | jobs.Context.handler = handler; |
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104 | jobs.Context.arg = arg; |
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105 | |
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106 | _SMP_Issue_action_jobs( targets, &jobs, cpu_max ); |
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107 | _SMP_Wait_for_action_jobs( targets, &jobs, cpu_max ); |
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108 | } |
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