source: rtems/cpukit/score/include/rtems/score/mppkt.h @ 3a5dbdc

4.104.114.84.95
Last change on this file since 3a5dbdc was 3a5dbdc, checked in by Joel Sherrill <joel.sherrill@…>, on Jul 31, 1995 at 10:22:38 PM

Switched to events for mp receive server and eliminated the special
blocking mechanism for it.

  • Property mode set to 100644
File size: 3.2 KB
Line 
1/*  mppkt.h
2 *
3 *  This package is the specification for the Packet Handler.
4 *  This handler defines the basic RTEMS packet and provides
5 *  mechanisms to utilize packets based on this prefix.
6 *
7 *
8 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
9 *  On-Line Applications Research Corporation (OAR).
10 *  All rights assigned to U.S. Government, 1994.
11 *
12 *  This material may be reproduced by or for the U.S. Government pursuant
13 *  to the copyright license under the clause at DFARS 252.227-7013.  This
14 *  notice must appear in all copies of this file and its derivatives.
15 *
16 *  $Id$
17 */
18
19#ifndef __RTEMS_MP_PACKET_h
20#define __RTEMS_MP_PACKET_h
21
22#ifdef __cplusplus
23extern "C" {
24#endif
25
26#include <rtems/object.h>
27#include <rtems/priority.h>
28#include <rtems/watchdog.h>
29
30/*
31 * The following enumerated type defines the packet classes
32 *  supported by RTEMS.
33 *
34 *  NOTE:  In general, each class corresponds to a manager
35 *         which supports global operations.  Each manager
36 *         defines the set of supported operations.
37 */
38
39typedef enum {
40  RTEMS_MP_PACKET_INTERNAL_THREADS = 0,
41  RTEMS_MP_PACKET_TASKS            = 1,
42  RTEMS_MP_PACKET_MESSAGE_QUEUE    = 2,
43  RTEMS_MP_PACKET_SEMAPHORE        = 3,
44  RTEMS_MP_PACKET_PARTITION        = 4,
45  RTEMS_MP_PACKET_REGION           = 5,
46  RTEMS_MP_PACKET_EVENT            = 6,
47  RTEMS_MP_PACKET_SIGNAL           = 7
48}   rtems_mp_packet_classes;
49
50#define MP_PACKET_CLASSES_FIRST  RTEMS_MP_PACKET_INTERNAL_THREADS
51#define MP_PACKET_CLASSES_LAST   RTEMS_MP_PACKET_SIGNAL
52
53/*
54 *  The following record contains the prefix for every packet
55 *  passed between RTEMS nodes.
56 *
57 *  NOTE: This structure is padded to insure that anything
58 *        following it is on a 16 byte boundary.  This is
59 *        the most stringent structure alignment rule
60 *        the RTEMS project has encountered yet (i960CA).
61 */
62
63typedef struct {
64  rtems_mp_packet_classes the_class;
65  Objects_Id              id;
66  Objects_Id              source_tid;
67  rtems_task_priority     source_priority;
68  rtems_status_code       return_code;
69  unsigned32              length;
70  unsigned32              to_convert;
71  rtems_interval          timeout;
72}   rtems_packet_prefix;
73
74/*
75 *  An MPCI must support packets of at least this size.
76 */
77
78#define RTEMS_MINIMUM_PACKET_SIZE  64
79
80/*
81 *  The following constant defines the number of unsigned32's
82 *  in a packet which must be converted to native format in a
83 *  heterogeneous system.  In packets longer than
84 *  RTEMS_MINIMUN_HETERO_CONVERSION unsigned32's, some of the "extra" data
85 *  may a user message buffer which is not automatically endian swapped.
86 */
87
88#define RTEMS_MINIMUN_HETERO_CONVERSION  ( sizeof( rtems_packet_prefix ) / 4 )
89
90/*
91 *  _Mp_packet_Is_valid_packet_class
92 *
93 *  DESCRIPTION:
94 *
95 *  This function returns TRUE if the the_packet_class is valid,
96 *  and FALSE otherwise.
97 */
98
99STATIC INLINE boolean _Mp_packet_Is_valid_packet_class (
100  rtems_mp_packet_classes the_packet_class
101);
102
103/*
104 *  _Mp_packet_Is_null
105 *
106 *  DESCRIPTION:
107 *
108 *  This function returns TRUE if the the_packet_class is null,
109 *  and FALSE otherwise.
110 */
111
112STATIC INLINE boolean _Mp_packet_Is_null (
113  rtems_packet_prefix   *the_packet
114);
115
116#include <rtems/mppkt.inl>
117
118#ifdef __cplusplus
119}
120#endif
121
122#endif
123/* end of include file */
Note: See TracBrowser for help on using the repository browser.