[ac7d5ef0] | 1 | /* Shm_Send_packet |
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| 2 | * |
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| 3 | * This routine is the shared memory driver locked queue write |
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| 4 | * MPCI driver routine. This routine sends the specified packet |
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| 5 | * to the destination specified by "node". A "node" value of |
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| 6 | * zero designates that this packet is to be broadcasted. |
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| 7 | * |
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| 8 | * Input parameters: |
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| 9 | * node - destination of this packet (0 = broadcast) |
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| 10 | * packet - address of packet |
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| 11 | * |
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| 12 | * Output parameters: NONE |
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| 13 | * |
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| 14 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 15 | * On-Line Applications Research Corporation (OAR). |
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| 16 | * All rights assigned to U.S. Government, 1994. |
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| 17 | * |
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| 18 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 19 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 20 | * notice must appear in all copies of this file and its derivatives. |
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| 21 | * |
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| 22 | * $Id$ |
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| 23 | */ |
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| 24 | |
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| 25 | #include <rtems.h> |
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| 26 | #include "shm.h" |
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| 27 | |
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| 28 | struct pkt_cpy { |
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| 29 | rtems_unsigned32 packet[MAX_PACKET_SIZE/4]; |
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| 30 | }; |
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| 31 | |
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| 32 | rtems_mpci_entry Shm_Send_packet( |
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| 33 | rtems_unsigned32 node, |
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| 34 | rtems_packet_prefix *packet |
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| 35 | ) |
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| 36 | { |
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| 37 | Shm_Envelope_control *ecb, *tmp_ecb; |
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| 38 | rtems_unsigned32 nnum; |
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| 39 | |
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| 40 | ecb = Shm_Packet_prefix_to_envelope_control_pointer( packet ); |
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| 41 | if ( node ) { |
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| 42 | Shm_Build_preamble( ecb, node ); |
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| 43 | Shm_Build_postamble( ecb ); |
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| 44 | Shm_Append_to_receive_queue( node, ecb ); |
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| 45 | (*Shm_Configuration->cause_intr)( node ); |
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| 46 | } |
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| 47 | else { |
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| 48 | for( nnum = SHM_FIRST_NODE ; nnum <= Shm_Maximum_nodes ; nnum++ ) |
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| 49 | if ( Shm_Local_node != nnum ) { |
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| 50 | tmp_ecb = Shm_Allocate_envelope(); |
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| 51 | if ( !tmp_ecb ) |
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| 52 | rtems_fatal_error_occurred( SHM_NO_FREE_PKTS ); |
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| 53 | Shm_Build_preamble( tmp_ecb, nnum ); |
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| 54 | *((struct pkt_cpy *)tmp_ecb->packet) = *((struct pkt_cpy *)packet); |
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| 55 | Shm_Build_postamble( tmp_ecb ); |
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| 56 | Shm_Append_to_receive_queue( nnum, tmp_ecb ); |
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| 57 | (*Shm_Configuration->cause_intr)( nnum ); |
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| 58 | } |
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| 59 | Shm_Free_envelope( ecb ); |
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| 60 | } |
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| 61 | } |
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