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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/**
* @file
*
* @ingroup ClassicPartImpl
*
* @brief This header file provides interfaces used by the Partition Manager
* implementation.
*/
/* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_RTEMS_PARTIMPL_H
#define _RTEMS_RTEMS_PARTIMPL_H
#include <rtems/rtems/partdata.h>
#include <rtems/score/chainimpl.h>
#include <rtems/score/objectimpl.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup ClassicPartImpl Partition Manager Implementation
*
* @ingroup RTEMSImplClassic
*
* @{
*/
RTEMS_INLINE_ROUTINE bool _Partition_Is_buffer_area_aligned(
const void *starting_address
)
{
return (((uintptr_t) starting_address) % CPU_SIZEOF_POINTER) == 0;
}
/**
* @brief Allocates a partition control block from the
* inactive chain of free partition control blocks.
*
* This function allocates a partition control block from
* the inactive chain of free partition control blocks.
*/
RTEMS_INLINE_ROUTINE Partition_Control *_Partition_Allocate ( void )
{
return (Partition_Control *) _Objects_Allocate( &_Partition_Information );
}
RTEMS_INLINE_ROUTINE void _Partition_Initialize(
Partition_Control *the_partition,
void *starting_address,
uint32_t length,
uint32_t buffer_size,
rtems_attribute attribute_set
)
{
the_partition->starting_address = starting_address;
the_partition->length = length;
the_partition->buffer_size = buffer_size;
the_partition->attribute_set = attribute_set;
the_partition->number_of_used_blocks = 0;
_Chain_Initialize(
&the_partition->Memory,
starting_address,
length / buffer_size,
buffer_size
);
_ISR_lock_Initialize( &the_partition->Lock, "Partition" );
}
/**
* @brief Calls _Objects_Get() using the ::_Partition_Information.
*
* @param id is the object identifier.
* @param[out] lock_context is the lock context.
*
* @return See _Objects_Get().
*/
RTEMS_INLINE_ROUTINE Partition_Control *_Partition_Get(
Objects_Id id,
ISR_lock_Context *lock_context
)
{
return (Partition_Control *) _Objects_Get(
id,
lock_context,
&_Partition_Information
);
}
/**
* @brief Acquires the partition lock in an ISR disabled section.
*
* @param[in, out] the_partition is the partition control block.
*
* @param[in, out] lock_context is the lock context set up by _Partition_Get().
*/
RTEMS_INLINE_ROUTINE void _Partition_Acquire_critical(
Partition_Control *the_partition,
ISR_lock_Context *lock_context
)
{
_ISR_lock_Acquire( &the_partition->Lock, lock_context );
}
/**
* @brief Releases the partition lock and restores the ISR level.
*
* @param[in, out] the_partition is the partition control block.
*
* @param[in, out] lock_context is the lock context set up by _Partition_Get().
*/
RTEMS_INLINE_ROUTINE void _Partition_Release(
Partition_Control *the_partition,
ISR_lock_Context *lock_context
)
{
_ISR_lock_Release_and_ISR_enable( &the_partition->Lock, lock_context );
}
/**@}*/
#ifdef __cplusplus
}
#endif
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/rtems/partmp.h>
#endif
#endif
/* end of include file */
|
