1 | /* |
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2 | * Copyright (c) 2015, 2016 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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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.org/license/LICENSE. |
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13 | */ |
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14 | |
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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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19 | #include <rtems/score/watchdogimpl.h> |
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20 | #include <rtems/score/schedulerimpl.h> |
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21 | #include <rtems/score/threaddispatch.h> |
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22 | #include <rtems/score/timecounter.h> |
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23 | |
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24 | void _Watchdog_Do_tickle( |
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25 | Watchdog_Header *header, |
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26 | uint64_t now, |
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27 | #ifdef RTEMS_SMP |
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28 | ISR_lock_Control *lock, |
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29 | #endif |
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30 | ISR_lock_Context *lock_context |
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31 | ) |
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32 | { |
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33 | while ( true ) { |
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34 | Watchdog_Control *the_watchdog; |
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35 | |
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36 | the_watchdog = (Watchdog_Control *) header->first; |
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37 | |
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38 | if ( the_watchdog == NULL ) { |
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39 | break; |
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40 | } |
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41 | |
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42 | if ( the_watchdog->expire <= now ) { |
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43 | Watchdog_Service_routine_entry routine; |
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44 | |
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45 | _Watchdog_Next_first( header, the_watchdog ); |
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46 | _RBTree_Extract( &header->Watchdogs, &the_watchdog->Node.RBTree ); |
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47 | _Watchdog_Set_state( the_watchdog, WATCHDOG_INACTIVE ); |
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48 | routine = the_watchdog->routine; |
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49 | |
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50 | _ISR_lock_Release_and_ISR_enable( lock, lock_context ); |
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51 | ( *routine )( the_watchdog ); |
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52 | _ISR_lock_ISR_disable_and_acquire( lock, lock_context ); |
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53 | } else { |
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54 | break; |
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55 | } |
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56 | } |
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57 | |
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58 | _ISR_lock_Release_and_ISR_enable( lock, lock_context ); |
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59 | } |
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60 | |
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61 | void _Watchdog_Tick( Per_CPU_Control *cpu ) |
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62 | { |
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63 | ISR_lock_Context lock_context; |
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64 | uint64_t ticks; |
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65 | struct timespec now; |
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66 | |
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67 | if ( _Per_CPU_Is_boot_processor( cpu ) ) { |
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68 | ++_Watchdog_Ticks_since_boot; |
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69 | } |
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70 | |
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71 | _ISR_lock_ISR_disable_and_acquire( &cpu->Watchdog.Lock, &lock_context ); |
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72 | |
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73 | ticks = cpu->Watchdog.ticks; |
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74 | _Assert( ticks < UINT64_MAX ); |
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75 | ++ticks; |
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76 | cpu->Watchdog.ticks = ticks; |
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77 | |
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78 | _Watchdog_Tickle( |
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79 | &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_RELATIVE ], |
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80 | ticks, |
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81 | &cpu->Watchdog.Lock, |
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82 | &lock_context |
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83 | ); |
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84 | |
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85 | _Timecounter_Getnanotime( &now ); |
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86 | _Watchdog_Per_CPU_tickle_absolute( |
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87 | cpu, |
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88 | _Watchdog_Ticks_from_timespec( &now ) |
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89 | ); |
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90 | |
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91 | _Scheduler_Tick( cpu ); |
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92 | } |
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