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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [include/] [rtems/] [score/] [mppkt.h] - Blame information for rev 593

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/*  mppkt.h
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 *
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 *  This package is the specification for the Packet Handler.
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 *  This handler defines the basic packet and provides
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 *  mechanisms to utilize packets based on this prefix.
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 *  Packets are the fundamental basis for messages passed between
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 *  nodes in an MP system.
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 *
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: mppkt.h,v 1.2 2001-09-27 11:59:32 chris Exp $
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 */
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#ifndef __MP_PACKET_h
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#define __MP_PACKET_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <rtems/score/object.h>
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#include <rtems/score/priority.h>
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#include <rtems/score/watchdog.h>
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/*
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 *  The following enumerated type defines the packet classes.
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 *
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 *  NOTE:  In general, each class corresponds to a manager
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 *         which supports global operations.  Each manager
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 *         defines the set of supported operations.
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 */
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typedef enum {
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  MP_PACKET_MPCI_INTERNAL    = 0,
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  MP_PACKET_TASKS            = 1,
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  MP_PACKET_MESSAGE_QUEUE    = 2,
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  MP_PACKET_SEMAPHORE        = 3,
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  MP_PACKET_PARTITION        = 4,
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  MP_PACKET_REGION           = 5,
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  MP_PACKET_EVENT            = 6,
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  MP_PACKET_SIGNAL           = 7
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}   MP_packet_Classes;
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#define MP_PACKET_CLASSES_FIRST  MP_PACKET_MPCI_INTERNAL
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#define MP_PACKET_CLASSES_LAST   MP_PACKET_SIGNAL
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/*
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 *  The following record contains the prefix for every packet
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 *  passed between nodes in an MP system.
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 *
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 *  NOTE: This structure is padded to insure that anything
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 *        following it is on a 16 byte boundary.  This is
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 *        the most stringent structure alignment rule
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 *        encountered yet (i960CA).
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 */
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typedef struct {
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  MP_packet_Classes       the_class;
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  Objects_Id              id;
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  Objects_Id              source_tid;
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  Priority_Control        source_priority;
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  unsigned32              return_code;
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  unsigned32              length;
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  unsigned32              to_convert;
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  Watchdog_Interval       timeout;
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}   MP_packet_Prefix;
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/*
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 *  An MPCI must support packets of at least this size.
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 */
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#define MP_PACKET_MINIMUM_PACKET_SIZE  64
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/*
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 *  The following constant defines the number of unsigned32's
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 *  in a packet which must be converted to native format in a
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 *  heterogeneous system.  In packets longer than
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 *  MP_PACKET_MINIMUN_HETERO_CONVERSION unsigned32's, some of the "extra" data
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 *  may a user message buffer which is not automatically endian swapped.
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 */
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#define MP_PACKET_MINIMUN_HETERO_CONVERSION  \
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  ( sizeof( MP_packet_Prefix ) / sizeof( unsigned32 ) )
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#ifndef __RTEMS_APPLICATION__
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#include <rtems/score/mppkt.inl>
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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/* end of include file */

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