source: rtems/c/src/lib/libbsp/shmdr/send.c @ 48bfd992

4.104.114.84.95
Last change on this file since 48bfd992 was 48bfd992, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 30, 1999 at 7:58:02 PM

Renamed shm.h to shm_driver.h to avoid conflicts with POSIX shm.h.

Renamed file shmsupp/intr.c in some BSPs to shmsupp/cause_intr.c to
avoid conflict with rtems/src/intr.c (Classic API Interrupt Manager).

  • Property mode set to 100644
File size: 1.7 KB
Line 
1/*  Shm_Send_packet
2 *
3 *  This routine is the shared memory driver locked queue write
4 *  MPCI driver routine.  This routine sends the specified packet
5 *  to the destination specified by "node".  A "node" value of
6 *  zero designates that this packet is to be broadcasted.
7 *
8 *  Input parameters:
9 *    node          - destination of this packet (0 = broadcast)
10 *    packet        - address of packet
11 *
12 *  Output parameters: NONE
13 *
14 *  COPYRIGHT (c) 1989-1999.
15 *  On-Line Applications Research Corporation (OAR).
16 *
17 *  The license and distribution terms for this file may be
18 *  found in the file LICENSE in this distribution or at
19 *  http://www.OARcorp.com/rtems/license.html.
20 *
21 *  $Id$
22 */
23
24#include <rtems.h>
25#include "shm_driver.h"
26
27struct pkt_cpy {
28  rtems_unsigned32 packet[MAX_PACKET_SIZE/4];
29};
30
31rtems_mpci_entry Shm_Send_packet(
32  rtems_unsigned32 node,
33  rtems_packet_prefix *packet
34)
35{
36  Shm_Envelope_control *ecb, *tmp_ecb;
37  rtems_unsigned32 nnum;
38
39  ecb = Shm_Packet_prefix_to_envelope_control_pointer( packet );
40  if ( node ) {
41    Shm_Build_preamble( ecb, node );
42    Shm_Build_postamble( ecb );
43    Shm_Append_to_receive_queue( node, ecb );
44    (*Shm_Configuration->cause_intr)( node );
45  }
46  else {
47    for( nnum = SHM_FIRST_NODE ; nnum <= Shm_Maximum_nodes ; nnum++ )
48      if ( Shm_Local_node != nnum ) {
49        tmp_ecb = Shm_Allocate_envelope();
50        if ( !tmp_ecb )
51          rtems_fatal_error_occurred( SHM_NO_FREE_PKTS );
52        Shm_Build_preamble( tmp_ecb, nnum );
53        *((struct pkt_cpy *)tmp_ecb->packet) = *((struct pkt_cpy *)packet);
54        Shm_Build_postamble( tmp_ecb );
55        Shm_Append_to_receive_queue( nnum, tmp_ecb );
56        (*Shm_Configuration->cause_intr)( nnum );
57      }
58    Shm_Free_envelope( ecb );
59  }
60}
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