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score: Add _Watchdog_Acquire|Release|Flash()

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Update #2307.
This commit is contained in:
Sebastian Huber
2015-04-15 16:28:42 +02:00
parent 290309014c
commit 6d2539413b
6 changed files with 56 additions and 26 deletions
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30
cpukit/score/include/rtems/score/watchdogimpl.h
View File

@@ -21,6 +21,7 @@
#include <rtems/score/watchdog.h>
#include <rtems/score/chainimpl.h>
#include <rtems/score/isrlock.h>
#ifdef __cplusplus
extern "C" {
@@ -48,6 +49,11 @@ extern "C" {
* @brief Watchdog header.
*/
typedef struct {
/**
* @brief ISR lock to protect this watchdog chain.
*/
ISR_LOCK_MEMBER( Lock )
/**
* @brief The chain of active or transient watchdogs.
*/
@@ -84,6 +90,30 @@ SCORE_EXTERN Watchdog_Header _Watchdog_Ticks_header;
*/
SCORE_EXTERN Watchdog_Header _Watchdog_Seconds_header;
RTEMS_INLINE_ROUTINE void _Watchdog_Acquire(
Watchdog_Header *header,
ISR_lock_Context *lock_context
)
{
_ISR_lock_ISR_disable_and_acquire( &header->Lock, lock_context );
}
RTEMS_INLINE_ROUTINE void _Watchdog_Release(
Watchdog_Header *header,
ISR_lock_Context *lock_context
)
{
_ISR_lock_Release_and_ISR_enable( &header->Lock, lock_context );
}
RTEMS_INLINE_ROUTINE void _Watchdog_Flash(
Watchdog_Header *header,
ISR_lock_Context *lock_context
)
{
_ISR_lock_Flash( &header->Lock, lock_context );
}
/**
* @brief Initialize the watchdog handler.
*

16
cpukit/score/src/watchdogadjust.c
View File

@@ -27,15 +27,15 @@ void _Watchdog_Adjust_backward(
Watchdog_Interval units
)
{
ISR_Level level;
ISR_lock_Context lock_context;
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
if ( !_Watchdog_Is_empty( header ) ) {
_Watchdog_First( header )->delta_interval += units;
}
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
}
void _Watchdog_Adjust_forward(
@@ -43,9 +43,9 @@ void _Watchdog_Adjust_forward(
Watchdog_Interval units
)
{
ISR_Level level;
ISR_lock_Context lock_context;
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
while ( !_Watchdog_Is_empty( header ) && units > 0 ) {
Watchdog_Control *first = _Watchdog_First( header );
@@ -57,13 +57,13 @@ void _Watchdog_Adjust_forward(
units -= first->delta_interval;
first->delta_interval = 1;
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
_Watchdog_Tickle( header );
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
}
}
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
}

8
cpukit/score/src/watchdogadjusttochain.c
View File

@@ -29,10 +29,10 @@ void _Watchdog_Adjust_to_chain(
)
{
Watchdog_Interval units = units_arg;
ISR_Level level;
ISR_lock_Context lock_context;
Watchdog_Control *first;
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
while ( 1 ) {
if ( _Watchdog_Is_empty( header ) ) {
@@ -60,7 +60,7 @@ void _Watchdog_Adjust_to_chain(
_Chain_Extract_unprotected( &first->Node );
_Chain_Append_unprotected( to_fire, &first->Node );
_ISR_Flash( level );
_Watchdog_Flash( header, &lock_context );
if ( _Watchdog_Is_empty( header ) )
break;
@@ -70,6 +70,6 @@ void _Watchdog_Adjust_to_chain(
}
}
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
}

10
cpukit/score/src/watchdoginsert.c
View File

@@ -27,7 +27,7 @@ void _Watchdog_Insert(
Watchdog_Control *the_watchdog
)
{
ISR_Level level;
ISR_lock_Context lock_context;
Watchdog_Control *after;
uint32_t insert_isr_nest_level;
Watchdog_Interval delta_interval;
@@ -35,7 +35,7 @@ void _Watchdog_Insert(
insert_isr_nest_level = _ISR_Nest_level;
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
/*
* Check to see if the watchdog has just been inserted by a
@@ -43,7 +43,7 @@ void _Watchdog_Insert(
*/
if ( the_watchdog->state != WATCHDOG_INACTIVE ) {
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
return;
}
@@ -67,7 +67,7 @@ restart:
delta_interval -= after->delta_interval;
_ISR_Flash( level );
_Watchdog_Flash( header, &lock_context );
if ( the_watchdog->state != WATCHDOG_BEING_INSERTED ) {
goto exit_insert;
@@ -90,5 +90,5 @@ restart:
exit_insert:
_Watchdog_Sync_level = insert_isr_nest_level;
_Watchdog_Sync_count--;
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
}

6
cpukit/score/src/watchdogremove.c
View File

@@ -27,11 +27,11 @@ Watchdog_States _Watchdog_Remove(
Watchdog_Control *the_watchdog
)
{
ISR_Level level;
ISR_lock_Context lock_context;
Watchdog_States previous_state;
Watchdog_Control *next_watchdog;
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
previous_state = the_watchdog->state;
switch ( previous_state ) {
case WATCHDOG_INACTIVE:
@@ -63,6 +63,6 @@ Watchdog_States _Watchdog_Remove(
}
the_watchdog->stop_time = _Watchdog_Ticks_since_boot;
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
return( previous_state );
}

12
cpukit/score/src/watchdogtickle.c
View File

@@ -25,9 +25,9 @@ void _Watchdog_Tickle(
Watchdog_Header *header
)
{
ISR_Level level;
ISR_lock_Context lock_context;
Watchdog_Control *the_watchdog;
Watchdog_States watchdog_state;
Watchdog_States watchdog_state;
/*
* See the comment in watchdoginsert.c and watchdogadjust.c
@@ -35,7 +35,7 @@ void _Watchdog_Tickle(
* volatile data - till, 2003/7
*/
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
if ( _Watchdog_Is_empty( header ) )
goto leave;
@@ -76,7 +76,7 @@ void _Watchdog_Tickle(
do {
watchdog_state = _Watchdog_Remove( header, the_watchdog );
_ISR_Enable( level );
_Watchdog_Release( header, &lock_context );
switch( watchdog_state ) {
case WATCHDOG_ACTIVE:
@@ -106,12 +106,12 @@ void _Watchdog_Tickle(
break;
}
_ISR_Disable( level );
_Watchdog_Acquire( header, &lock_context );
the_watchdog = _Watchdog_First( header );
} while ( !_Watchdog_Is_empty( header ) &&
(the_watchdog->delta_interval == 0) );
leave:
_ISR_Enable(level);
_Watchdog_Release( header, &lock_context );
}