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lanttu |
/*
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* Driver functions for UDP2HIBI block.
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*
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* These are more like examples, so modify if you see it necessary
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*
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* Original author: Jussi Nieminen
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* Last update: 7.1.2010
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* History:
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* 7.1.2010: created
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*/
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#ifndef UDP2HIBI_H_
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#define UDP2HIBI_H_
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/* Reserve a slot from udp2hibi's rx configuration table. The udp2hibi
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* then relays matching transmissions to address receiving_haddr. An ack
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* is sent if reservation is succesful, and a nack comes if the table
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* is full. 1 is returned on success, 0 if the given rx info is somehow
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* invalid.
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*/
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int udp2hibi_rx_conf( int ip_addr, int dest_port, int source_port, int receiving_haddr, int udp2hibi_haddr );
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/* Lock udp2hibi to listen data that is coming to address udp2hibi_haddr.
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* Also configure destination ip and ports for a following transfer.
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* An ack is sent to the receiving_haddr, if the udp2hibi is not already
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* reserved. If a nack is received, it means that someone else is using
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* udp2hibi right now and you should try again after a while. Returns 1
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* on success, 0 if there is something wrong with the given parameters.
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* Timeout has to be under 2^28.
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*/
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int udp2hibi_tx_conf( unsigned int timeout, int ip_addr, int dest_port, int source_port, int receiving_haddr, int udp2hibi_haddr );
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/* Check if the tx/rx ack received is correct. Both functions return
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* 1 on success, and 0 if it's a nack or an invalid header.
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*/
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int udp2hibi_check_tx_ack( unsigned int received_header );
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int udp2hibi_check_rx_ack( unsigned int received_header );
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/* You are responsible of storing the data to be sent to correct addresses
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* in the shared memory between cpu and n2h2. This function only saves you
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* from generating and storing the udp2hibi data header.
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*/
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void udp2hibi_write_data_header( int* mem_addr, int tx_length );
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/* This function makes udp2hibi again available for other agents.
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* Call this after you have finished sending. And don't you forget,
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* or the other agents will be very angry...
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*/
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void udp2hibi_release_lock( int udp2hibi_haddr );
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#endif /*UDP2HIBI_H_*/
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