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/*
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* Copyright (c) 2010, Mentor Graphics Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of the <ORGANIZATION> nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <openmcapi.h>
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/*************************************************************************
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*
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* FUNCTION
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*
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* scal_send
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*
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* DESCRIPTION
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*
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* Send a scalar over a connected channel. Called by both
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* blocking and non-blocking transmission routines.
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*
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* INPUTS
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*
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* send_handle The transmission handle.
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* *buffer A pointer to the data to transmit.
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* type The type of scalar to transmit.
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* *mcapi_status A pointer to memory that will be filled in
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* with the status of the call.
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*
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* OUTPUTS
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*
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* None.
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*
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*************************************************************************/
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void scal_send(mcapi_pktchan_send_hndl_t send_handle, MCAPI_SCALAR *buffer,
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mcapi_uint8_t type, mcapi_status_t *mcapi_status)
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{
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mcapi_port_t port_id;
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mcapi_node_t node_id;
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MCAPI_GLOBAL_DATA *node_data;
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MCAPI_ENDPOINT *tx_endp_ptr = MCAPI_NULL;
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MCAPI_BUFFER *tx_buf;
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if (mcapi_status)
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{
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/* Lock the global data structure. */
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mcapi_lock_node_data();
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/* Get a pointer to the global node list. */
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node_data = mcapi_get_node_data();
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/* Get a pointer to the endpoint that is sending data. */
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tx_endp_ptr = mcapi_decode_local_endpoint(node_data, &node_id,
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&port_id, send_handle,
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mcapi_status);
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/* Ensure the transmit endpoint is valid. */
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if (*mcapi_status == MCAPI_SUCCESS)
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{
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/* Ensure the handle is open for sending. */
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if ( (tx_endp_ptr->mcapi_state & MCAPI_ENDP_TX) &&
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(tx_endp_ptr->mcapi_state & MCAPI_ENDP_CONNECTED) )
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{
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/* Ensure the handle is for a scalar channel. */
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if (tx_endp_ptr->mcapi_chan_type == MCAPI_CHAN_SCAL_TYPE)
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{
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/* Get a transmission buffer for tracking when the outgoing
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* data has been successfully sent.
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*/
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tx_buf = tx_endp_ptr->mcapi_route->mcapi_rt_int->
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mcapi_get_buffer(tx_endp_ptr->mcapi_foreign_node_id,
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sizeof(mcapi_uint64_t) + MCAPI_HEADER_LEN,
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tx_endp_ptr->mcapi_priority);
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if (tx_buf)
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{
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/* Save a pointer to the tx interface. */
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tx_buf->mcapi_dev_ptr =
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(MCAPI_POINTER)(tx_endp_ptr->mcapi_route->mcapi_rt_int);
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/* Set the source node in the packet. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_SRC_NODE_OFFSET,
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tx_endp_ptr->mcapi_node_id);
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/* Set the source port in the packet. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_SRC_PORT_OFFSET,
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tx_endp_ptr->mcapi_port_id);
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/* Set the destination node in the packet. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_DEST_NODE_OFFSET,
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tx_endp_ptr->mcapi_foreign_node_id);
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/* Set the destination port in the packet. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_DEST_PORT_OFFSET,
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tx_endp_ptr->mcapi_foreign_port_id);
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/* Set the priority of the packet. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_PRIO_OFFSET,
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tx_endp_ptr->mcapi_priority);
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/* Zero out the unused bits. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_UNUSED_OFFSET, 0);
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switch (type)
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{
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case MCAPI_SCALAR_UINT8:
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/* Put the 8-bits in the packet in network order. */
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MCAPI_PUT8(tx_buf->buf_ptr, MCAPI_HEADER_LEN,
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buffer->mcapi_scal.scal_uint8);
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tx_buf->buf_size = sizeof(mcapi_uint8_t);
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break;
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case MCAPI_SCALAR_UINT16:
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/* Put the 16-bits in the packet in network order. */
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MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_HEADER_LEN,
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buffer->mcapi_scal.scal_uint16);
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tx_buf->buf_size = sizeof(mcapi_uint16_t);
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break;
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case MCAPI_SCALAR_UINT32:
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/* Put the 32-bits in the packet in network order. */
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MCAPI_PUT32(tx_buf->buf_ptr, MCAPI_HEADER_LEN,
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buffer->mcapi_scal.scal_uint32);
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tx_buf->buf_size = sizeof(mcapi_uint32_t);
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break;
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case MCAPI_SCALAR_UINT64:
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/* Put the 64-bits in the packet in network order. */
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MCAPI_PUT64(tx_buf->buf_ptr, MCAPI_HEADER_LEN,
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buffer->mcapi_scal.scal_uint64);
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tx_buf->buf_size = sizeof(mcapi_uint64_t);
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break;
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default:
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/* This can never happen. */
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break;
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}
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/* Set the length of the data in the buffer. */
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tx_buf->buf_size += MCAPI_HEADER_LEN;
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/* Pass the data to the transport layer driver. */
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*mcapi_status = tx_endp_ptr->mcapi_route->mcapi_rt_int->
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mcapi_tx_output(tx_buf, tx_buf->buf_size,
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tx_endp_ptr->mcapi_priority,
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tx_endp_ptr);
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/* If the routine cannot complete immediately. */
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if (*mcapi_status != MCAPI_SUCCESS)
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{
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/* Return the transmission buffer to the list of
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* free buffers in the system.
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*/
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((MCAPI_INTERFACE*)(tx_buf->mcapi_dev_ptr))->
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mcapi_recover_buffer(tx_buf);
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}
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}
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/* There are no transmission buffers available to process this
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* request.
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*/
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else
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{
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*mcapi_status = MCAPI_ERR_TRANSMISSION;
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}
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}
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/* The handle is for a packet channel. */
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else
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{
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*mcapi_status = MCAPI_ERR_CHAN_TYPE;
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}
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}
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/* The handle is open for receiving. */
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else
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{
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/* If this is a receive channel. */
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if (tx_endp_ptr->mcapi_state & MCAPI_ENDP_RX)
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{
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*mcapi_status = MCAPI_ERR_CHAN_DIRECTION;
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}
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/* Otherwise, the connection has been closed. */
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else
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{
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*mcapi_status = MCAPI_ERR_CHAN_INVALID;
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}
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}
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}
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else
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{
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*mcapi_status = MCAPI_ERR_CHAN_INVALID;
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}
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/* Unlock the global data structure. */
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mcapi_unlock_node_data();
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}
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}
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