forked from Imagelibrary/rtems
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/**
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* @file
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*/
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/*
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* COPYRIGHT (c) 1989-1999, 2016.
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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.rtems.org/license/LICENSE.
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*/
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#include <rtems.h>
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#include "shm_driver.h"
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struct pkt_cpy {
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uint32_t packet[MAX_PACKET_SIZE/4];
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};
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/**
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* This routine is the shared memory driver locked queue write
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* MPCI driver routine. This routine sends the specified packet
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* to the destination specified by "node". A "node" value of
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* zero designates that this packet is to be broadcasted.
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*
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* @param node is the destination of this packet (0 = broadcast)
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* @param packet is the address of packet
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*
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* @return NONE
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*/
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rtems_mpci_entry Shm_Send_packet(
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uint32_t node,
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rtems_packet_prefix *packet
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)
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{
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Shm_Envelope_control *ecb, *tmp_ecb;
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uint32_t nnum;
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ecb = Shm_Packet_prefix_to_envelope_control_pointer( packet );
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if ( node ) {
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Shm_Build_preamble( ecb, node );
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Shm_Build_postamble( ecb );
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Shm_Append_to_receive_queue( node, ecb );
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(*Shm_Configuration->cause_intr)( node );
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}
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else {
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for( nnum = SHM_FIRST_NODE ; nnum <= SHM_MAXIMUM_NODES ; nnum++ )
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if ( _Configuration_MP_table->node != nnum ) {
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struct pkt_cpy *pkt;
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tmp_ecb = Shm_Allocate_envelope();
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if ( !tmp_ecb )
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rtems_fatal_error_occurred( SHM_NO_FREE_PKTS );
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Shm_Build_preamble( tmp_ecb, nnum );
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pkt = (struct pkt_cpy *)tmp_ecb->packet;
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*pkt = *((struct pkt_cpy *)packet);
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Shm_Build_postamble( tmp_ecb );
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Shm_Append_to_receive_queue( nnum, tmp_ecb );
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(*Shm_Configuration->cause_intr)( nnum );
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}
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Shm_Free_envelope( ecb );
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}
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}
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