[87c69f3] | 1 | /** |
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| 2 | * @file |
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| 3 | * RTEMS SMP Support for Scheduler Simulator |
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| 4 | */ |
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| 5 | |
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[f40778b] | 6 | /* |
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[87c69f3] | 7 | * COPYRIGHT (c) 1989-2014. |
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[f40778b] | 8 | * On-Line Applications Research Corporation (OAR). |
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| 9 | * |
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| 10 | * The license and distribution terms for this file may be |
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| 11 | * found in the file LICENSE in this distribution or at |
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| 12 | * http://www.rtems.com/license/LICENSE. |
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| 13 | */ |
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| 14 | |
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[87c69f3] | 15 | #if HAVE_CONFIG_H |
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| 16 | #include "config.h" |
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| 17 | #endif |
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| 18 | |
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[f40778b] | 19 | #include <rtems.h> |
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| 20 | #include <rtems/bspIo.h> |
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| 21 | #include <stdlib.h> |
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| 22 | |
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[87c69f3] | 23 | #if RTEMS_SMP |
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| 24 | uint32_t Schedsim_Current_cpu; |
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| 25 | extern uint32_t Schedsim_Maximum_CPUs_From_Command_Line; |
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| 26 | #endif |
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[f40778b] | 27 | |
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[2d51251] | 28 | uint32_t _CPU_SMP_Initialize( void ) |
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[f40778b] | 29 | { |
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[87c69f3] | 30 | #if RTEMS_SMP |
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[f40778b] | 31 | /* return the number of CPUs */ |
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[726b27c] | 32 | return Schedsim_Maximum_CPUs_From_Command_Line; |
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[87c69f3] | 33 | #else |
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| 34 | return 1; |
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| 35 | #endif |
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[f40778b] | 36 | } |
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| 37 | |
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[2d51251] | 38 | bool _CPU_SMP_Start_processor( uint32_t cpu_index ) |
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[f40778b] | 39 | { |
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[2d51251] | 40 | return true; |
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[f40778b] | 41 | } |
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| 42 | |
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[2d51251] | 43 | void _CPU_SMP_Finalize_initialization( uint32_t cpu_count ) |
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[f40778b] | 44 | { |
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| 45 | } |
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| 46 | |
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[2d51251] | 47 | void _CPU_SMP_Send_interrupt( uint32_t target_processor_index ) |
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[f40778b] | 48 | { |
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[b38dbcc] | 49 | } |
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[f40778b] | 50 | |
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[2d51251] | 51 | void _CPU_SMP_Processor_event_broadcast( void ) |
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[f40778b] | 52 | { |
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[87c69f3] | 53 | #if RTEMS_SMP |
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[2d51251] | 54 | Per_CPU_Control *cpu = _Per_CPU_Get(); |
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| 55 | uint32_t cpu_count = _SMP_Get_processor_count(); |
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| 56 | uint32_t cpu_index; |
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| 57 | Per_CPU_State state = cpu->state; |
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| 58 | |
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| 59 | if (state == PER_CPU_STATE_REQUEST_START_MULTITASKING) { |
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| 60 | for ( cpu_index = 0 ; cpu_index < cpu_count ; ++cpu_index ) { |
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| 61 | cpu = _Per_CPU_Get_by_index( cpu_index ); |
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| 62 | state = cpu->state; |
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| 63 | if (state == PER_CPU_STATE_INITIAL ) |
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| 64 | cpu->state = PER_CPU_STATE_READY_TO_START_MULTITASKING; |
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| 65 | } |
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| 66 | } |
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[87c69f3] | 67 | #endif |
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[f40778b] | 68 | } |
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| 69 | |
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| 70 | |
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[2d51251] | 71 | void _CPU_SMP_Processor_event_receive( void ) |
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| 72 | { |
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[f40778b] | 73 | } |
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| 74 | |
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[2d51251] | 75 | uint32_t _CPU_SMP_Get_current_processor( void ) |
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| 76 | { |
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[87c69f3] | 77 | #if RTEMS_SMP |
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| 78 | return 0; |
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| 79 | #else |
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[2d51251] | 80 | return Schedsim_Current_cpu; |
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[87c69f3] | 81 | #endif |
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[2d51251] | 82 | } |
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