From ac7d5ef06a6d6e8d84abbd1f0b82162725f98326 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Thu, 11 May 1995 17:39:37 +0000 Subject: Initial revision --- c/src/exec/score/headers/mppkt.h | 123 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 c/src/exec/score/headers/mppkt.h (limited to 'c/src/exec/score/headers/mppkt.h') diff --git a/c/src/exec/score/headers/mppkt.h b/c/src/exec/score/headers/mppkt.h new file mode 100644 index 0000000000..e0cf6b1967 --- /dev/null +++ b/c/src/exec/score/headers/mppkt.h @@ -0,0 +1,123 @@ +/* mppkt.h + * + * This package is the specification for the Packet Handler. + * This handler defines the basic RTEMS packet and provides + * mechanisms to utilize packets based on this prefix. + * + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#ifndef __RTEMS_MP_PACKET_h +#define __RTEMS_MP_PACKET_h + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include +#include + +/* + * The following enumerated type defines the packet classes + * supported by RTEMS. + * + * NOTE: In general, each class corresponds to a manager + * which supports global operations. Each manager + * defines the set of supported operations. + */ + +typedef enum { + RTEMS_MP_PACKET_INTERNAL_THREADS = 0, + RTEMS_MP_PACKET_TASKS = 1, + RTEMS_MP_PACKET_MESSAGE_QUEUE = 2, + RTEMS_MP_PACKET_SEMAPHORE = 3, + RTEMS_MP_PACKET_PARTITION = 4, + RTEMS_MP_PACKET_REGION = 5, + RTEMS_MP_PACKET_EVENT = 6, + RTEMS_MP_PACKET_SIGNAL = 7 +} rtems_mp_packet_classes; + +#define MP_PACKET_CLASSES_FIRST RTEMS_MP_PACKET_INTERNAL_THREADS +#define MP_PACKET_CLASSES_LAST RTEMS_MP_PACKET_SIGNAL + +/* + * The following record contains the prefix for every packet + * passed between RTEMS nodes. + * + * NOTE: This structure is padded to insure that anything + * following it is on a 16 byte boundary. This is + * the most stringent structure alignment rule + * the RTEMS project has encountered yet (i960CA). + */ + +typedef struct { + rtems_mp_packet_classes the_class; + Objects_Id id; + Objects_Id source_tid; + rtems_task_priority source_priority; + rtems_status_code return_code; + unsigned32 length; + unsigned32 to_convert; + rtems_interval timeout; +} rtems_packet_prefix; + +/* + * An MPCI must support packets of at least this size. + */ + +#define RTEMS_MINIMUM_PACKET_SIZE 64 + +/* + * The following constant defines the number of unsigned32's + * in a packet which must be converted to native format in a + * heterogeneous system. In packets longer than + * RTEMS_MINIMUN_HETERO_CONVERSION unsigned32's, some of the "extra" data + * may a user message buffer which is not automatically endian swapped. + */ + +#define RTEMS_MINIMUN_HETERO_CONVERSION ( sizeof( rtems_packet_prefix ) / 4 ) + +/* + * _Mp_packet_Is_valid_packet_class + * + * DESCRIPTION: + * + * This function returns TRUE if the the_packet_class is valid, + * and FALSE otherwise. + */ + +STATIC INLINE boolean _Mp_packet_Is_valid_packet_class ( + rtems_mp_packet_classes the_packet_class +); + +/* + * _Mp_packet_Is_null + * + * DESCRIPTION: + * + * This function returns TRUE if the the_packet_class is null, + * and FALSE otherwise. + */ + +STATIC INLINE boolean _Mp_packet_Is_null ( + rtems_packet_prefix *the_packet +); + +#include + +#ifdef __cplusplus +} +#endif + +#endif +/* end of include file */ -- cgit v1.2.3