1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
* This routine polls to see if a packet has arrived. If one
* has it informs the executive. It uses a Classic API Timer
*/
/*
* COPYRIGHT (c) 1989-2008, 2016.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <rtems/score/sysstate.h>
#include <rtems/score/watchdogimpl.h>
#include "shm_driver.h"
static void Shm_Poll_Set_timer( Watchdog_Control *the_watchdog )
{
Per_CPU_Control *cpu;
ISR_lock_Context lock_context;
cpu = _Watchdog_Get_CPU( the_watchdog );
_ISR_lock_ISR_disable( &lock_context );
_Watchdog_Per_CPU_acquire_critical( cpu, &lock_context );
_Watchdog_Insert(
&cpu->Watchdog.Header[ PER_CPU_WATCHDOG_TICKS ],
the_watchdog,
cpu->Watchdog.ticks + 1
);
_Watchdog_Per_CPU_release_critical( cpu, &lock_context );
_ISR_lock_ISR_enable( &lock_context );
}
static void Shm_Poll_TSR( Watchdog_Control *the_watchdog )
{
uint32_t tmpfront;
/*
* This should NEVER happen but just in case.
*/
if (!_System_state_Is_up(_System_state_Get()))
return;
tmpfront = Shm_Local_receive_queue->front;
if ( Shm_Convert(tmpfront) != Shm_Locked_queue_End_of_list ) {
rtems_multiprocessing_announce();
Shm_Interrupt_count++;
}
Shm_Poll_Set_timer( the_watchdog );
}
static Watchdog_Control Shm_Poll_Watchdog = WATCHDOG_INITIALIZER(
Shm_Poll_TSR
);
void Shm_install_timer(void)
{
Shm_Poll_Set_timer( &Shm_Poll_Watchdog );
}
|
