| 1 |
145 |
lanttu |
/*
|
| 2 |
|
|
* Copyright (c) 2010, Mentor Graphics Corporation
|
| 3 |
|
|
* All rights reserved.
|
| 4 |
|
|
*
|
| 5 |
|
|
* Redistribution and use in source and binary forms, with or without
|
| 6 |
|
|
* modification, are permitted provided that the following conditions are met:
|
| 7 |
|
|
*
|
| 8 |
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
| 9 |
|
|
* this list of conditions and the following disclaimer.
|
| 10 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
| 11 |
|
|
* this list of conditions and the following disclaimer in the documentation
|
| 12 |
|
|
* and/or other materials provided with the distribution.
|
| 13 |
|
|
* 3. Neither the name of the <ORGANIZATION> nor the names of its contributors
|
| 14 |
|
|
* may be used to endorse or promote products derived from this software
|
| 15 |
|
|
* without specific prior written permission.
|
| 16 |
|
|
*
|
| 17 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
| 18 |
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 19 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 20 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
| 21 |
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
| 22 |
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
| 23 |
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
| 24 |
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
| 25 |
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
| 26 |
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
| 27 |
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
| 28 |
|
|
*/
|
| 29 |
|
|
|
| 30 |
|
|
|
| 31 |
|
|
|
| 32 |
|
|
#include <openmcapi.h>
|
| 33 |
|
|
|
| 34 |
|
|
/*************************************************************************
|
| 35 |
|
|
*
|
| 36 |
|
|
* FUNCTION
|
| 37 |
|
|
*
|
| 38 |
|
|
* pkt_send
|
| 39 |
|
|
*
|
| 40 |
|
|
* DESCRIPTION
|
| 41 |
|
|
*
|
| 42 |
|
|
* Send a packet over a connected channel. Called by both
|
| 43 |
|
|
* blocking and non-blocking transmission routines.
|
| 44 |
|
|
*
|
| 45 |
|
|
* INPUTS
|
| 46 |
|
|
*
|
| 47 |
|
|
* send_handle The transmission handle.
|
| 48 |
|
|
* *buffer A pointer to the data to transmit.
|
| 49 |
|
|
* buffer_size The number of bytes of data to transmit.
|
| 50 |
|
|
* *request A pointer to memory that will be filled in
|
| 51 |
|
|
* with data relevant to the operation, so the
|
| 52 |
|
|
* status of the operation can later be checked.
|
| 53 |
|
|
* *mcapi_status A pointer to memory that will be filled in
|
| 54 |
|
|
* with the status of the call.
|
| 55 |
|
|
* timeout The amount of time to block for the operation
|
| 56 |
|
|
* to complete.
|
| 57 |
|
|
*
|
| 58 |
|
|
* OUTPUTS
|
| 59 |
|
|
*
|
| 60 |
|
|
* None.
|
| 61 |
|
|
*
|
| 62 |
|
|
*************************************************************************/
|
| 63 |
|
|
void pkt_send(mcapi_pktchan_send_hndl_t send_handle, void *buffer,
|
| 64 |
|
|
size_t buffer_size, mcapi_request_t *request,
|
| 65 |
|
|
mcapi_status_t *mcapi_status, mcapi_uint32_t timeout)
|
| 66 |
|
|
{
|
| 67 |
|
|
MCAPI_GLOBAL_DATA *node_data;
|
| 68 |
|
|
MCAPI_ENDPOINT *tx_endp_ptr = MCAPI_NULL;
|
| 69 |
|
|
MCAPI_BUFFER *tx_buf;
|
| 70 |
|
|
mcapi_port_t port_id;
|
| 71 |
|
|
mcapi_node_t node_id;
|
| 72 |
|
|
|
| 73 |
|
|
/* Validate the status parameter. */
|
| 74 |
|
|
if (mcapi_status)
|
| 75 |
|
|
{
|
| 76 |
|
|
/* Validate the input parameters. */
|
| 77 |
|
|
if ( (request) && ((buffer) || ((!buffer) && (buffer_size == 0))) )
|
| 78 |
|
|
{
|
| 79 |
|
|
/* Lock the global data structure. */
|
| 80 |
|
|
mcapi_lock_node_data();
|
| 81 |
|
|
|
| 82 |
|
|
/* Get a pointer to the global node list. */
|
| 83 |
|
|
node_data = mcapi_get_node_data();
|
| 84 |
|
|
|
| 85 |
|
|
/* Get a pointer to the endpoint that is sending data. */
|
| 86 |
|
|
tx_endp_ptr = mcapi_decode_local_endpoint(node_data, &node_id,
|
| 87 |
|
|
&port_id,
|
| 88 |
|
|
send_handle,
|
| 89 |
|
|
mcapi_status);
|
| 90 |
|
|
|
| 91 |
|
|
/* Ensure the transmit endpoint is valid. */
|
| 92 |
|
|
if (tx_endp_ptr)
|
| 93 |
|
|
{
|
| 94 |
|
|
/* Ensure the length of the buffer is valid. */
|
| 95 |
|
|
if (buffer_size + MCAPI_HEADER_LEN <=
|
| 96 |
|
|
tx_endp_ptr->mcapi_route->mcapi_rt_int->mcapi_max_buf_size)
|
| 97 |
|
|
{
|
| 98 |
|
|
/* Ensure this is a send handle and the connection
|
| 99 |
|
|
* is still good.
|
| 100 |
|
|
*/
|
| 101 |
|
|
if ( (tx_endp_ptr->mcapi_state & MCAPI_ENDP_TX) &&
|
| 102 |
|
|
(tx_endp_ptr->mcapi_state & MCAPI_ENDP_CONNECTED) )
|
| 103 |
|
|
{
|
| 104 |
|
|
/* Ensure the handle is for a packet channel. */
|
| 105 |
|
|
if (tx_endp_ptr->mcapi_chan_type == MCAPI_CHAN_PKT_TYPE)
|
| 106 |
|
|
{
|
| 107 |
|
|
/* Get a transmission buffer. */
|
| 108 |
|
|
tx_buf = tx_endp_ptr->mcapi_route->mcapi_rt_int->
|
| 109 |
|
|
mcapi_get_buffer(tx_endp_ptr->mcapi_foreign_node_id,
|
| 110 |
|
|
buffer_size + MCAPI_HEADER_LEN,
|
| 111 |
|
|
tx_endp_ptr->mcapi_priority);
|
| 112 |
|
|
|
| 113 |
|
|
if (tx_buf)
|
| 114 |
|
|
{
|
| 115 |
|
|
/* Save a pointer to the tx interface. */
|
| 116 |
|
|
tx_buf->mcapi_dev_ptr =
|
| 117 |
|
|
(MCAPI_POINTER)(tx_endp_ptr->mcapi_route->mcapi_rt_int);
|
| 118 |
|
|
|
| 119 |
|
|
/* Initialize the request structure. */
|
| 120 |
|
|
mcapi_init_request(request, MCAPI_REQ_TX_FIN);
|
| 121 |
|
|
|
| 122 |
|
|
/* Set up the request structure. */
|
| 123 |
|
|
request->mcapi_target_endp = send_handle;
|
| 124 |
|
|
|
| 125 |
|
|
/* Set the source node in the packet. */
|
| 126 |
|
|
MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_SRC_NODE_OFFSET,
|
| 127 |
|
|
tx_endp_ptr->mcapi_node_id);
|
| 128 |
|
|
|
| 129 |
|
|
/* Set the source port in the packet. */
|
| 130 |
|
|
MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_SRC_PORT_OFFSET,
|
| 131 |
|
|
tx_endp_ptr->mcapi_port_id);
|
| 132 |
|
|
|
| 133 |
|
|
/* Set the destination node in the packet. */
|
| 134 |
|
|
MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_DEST_NODE_OFFSET,
|
| 135 |
|
|
tx_endp_ptr->mcapi_foreign_node_id);
|
| 136 |
|
|
|
| 137 |
|
|
/* Set the destination port in the packet. */
|
| 138 |
|
|
MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_DEST_PORT_OFFSET,
|
| 139 |
|
|
tx_endp_ptr->mcapi_foreign_port_id);
|
| 140 |
|
|
|
| 141 |
|
|
/* Set the priority of the packet. */
|
| 142 |
|
|
MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_PRIO_OFFSET,
|
| 143 |
|
|
tx_endp_ptr->mcapi_priority);
|
| 144 |
|
|
|
| 145 |
|
|
/* Zero out the unused bits. */
|
| 146 |
|
|
MCAPI_PUT16(tx_buf->buf_ptr, MCAPI_UNUSED_OFFSET, 0);
|
| 147 |
|
|
|
| 148 |
|
|
/* Copy the data into the MCAPI buffer. */
|
| 149 |
|
|
memcpy(&tx_buf->buf_ptr[MCAPI_HEADER_LEN], buffer,
|
| 150 |
|
|
buffer_size);
|
| 151 |
|
|
|
| 152 |
|
|
/* Set the length of the data in the buffer. */
|
| 153 |
|
|
tx_buf->buf_size = buffer_size + MCAPI_HEADER_LEN;
|
| 154 |
|
|
|
| 155 |
|
|
/* Pass the data to the transport layer driver. */
|
| 156 |
|
|
*mcapi_status = tx_endp_ptr->mcapi_route->mcapi_rt_int->
|
| 157 |
|
|
mcapi_tx_output(tx_buf, buffer_size,
|
| 158 |
|
|
tx_endp_ptr->mcapi_priority,
|
| 159 |
|
|
tx_endp_ptr);
|
| 160 |
|
|
|
| 161 |
|
|
/* The data was transmitted. */
|
| 162 |
|
|
if (*mcapi_status == MCAPI_SUCCESS)
|
| 163 |
|
|
{
|
| 164 |
|
|
/* Set the status to success. */
|
| 165 |
|
|
request->mcapi_status = MCAPI_SUCCESS;
|
| 166 |
|
|
|
| 167 |
|
|
/* Record the number of bytes sent. */
|
| 168 |
|
|
request->mcapi_byte_count = buffer_size;
|
| 169 |
|
|
}
|
| 170 |
|
|
|
| 171 |
|
|
/* The data could not be transmitted. */
|
| 172 |
|
|
else
|
| 173 |
|
|
{
|
| 174 |
|
|
request->mcapi_status = *mcapi_status;
|
| 175 |
|
|
|
| 176 |
|
|
/* Indicate that no data was sent. */
|
| 177 |
|
|
request->mcapi_byte_count = 0;
|
| 178 |
|
|
|
| 179 |
|
|
/* Return the transmission buffer to the list
|
| 180 |
|
|
* of free buffers in the system.
|
| 181 |
|
|
*/
|
| 182 |
|
|
((MCAPI_INTERFACE*)(tx_buf->mcapi_dev_ptr))->
|
| 183 |
|
|
mcapi_recover_buffer(tx_buf);
|
| 184 |
|
|
}
|
| 185 |
|
|
}
|
| 186 |
|
|
|
| 187 |
|
|
/* There are no transmission buffers available to
|
| 188 |
|
|
* process this request.
|
| 189 |
|
|
*/
|
| 190 |
|
|
else
|
| 191 |
|
|
{
|
| 192 |
|
|
*mcapi_status = MCAPI_ERR_TRANSMISSION;
|
| 193 |
|
|
}
|
| 194 |
|
|
}
|
| 195 |
|
|
|
| 196 |
|
|
/* Trying to send a packet over a scalar channel. */
|
| 197 |
|
|
else
|
| 198 |
|
|
{
|
| 199 |
|
|
*mcapi_status = MCAPI_ERR_CHAN_TYPE;
|
| 200 |
|
|
}
|
| 201 |
|
|
}
|
| 202 |
|
|
|
| 203 |
|
|
/* Attempting to send over a receive channel. */
|
| 204 |
|
|
else
|
| 205 |
|
|
{
|
| 206 |
|
|
/* If this is a receive channel. */
|
| 207 |
|
|
if (tx_endp_ptr->mcapi_state & MCAPI_ENDP_RX)
|
| 208 |
|
|
{
|
| 209 |
|
|
*mcapi_status = MCAPI_ERR_CHAN_DIRECTION;
|
| 210 |
|
|
}
|
| 211 |
|
|
|
| 212 |
|
|
/* Otherwise, the connection has been closed. */
|
| 213 |
|
|
else
|
| 214 |
|
|
{
|
| 215 |
|
|
*mcapi_status = MCAPI_ERR_CHAN_INVALID;
|
| 216 |
|
|
}
|
| 217 |
|
|
}
|
| 218 |
|
|
}
|
| 219 |
|
|
|
| 220 |
|
|
/* The data size is too big. */
|
| 221 |
|
|
else
|
| 222 |
|
|
{
|
| 223 |
|
|
*mcapi_status = MCAPI_ERR_PKT_SIZE;
|
| 224 |
|
|
}
|
| 225 |
|
|
}
|
| 226 |
|
|
|
| 227 |
|
|
/* One of the endpoints is invalid. */
|
| 228 |
|
|
else
|
| 229 |
|
|
{
|
| 230 |
|
|
*mcapi_status = MCAPI_ERR_CHAN_INVALID;
|
| 231 |
|
|
}
|
| 232 |
|
|
|
| 233 |
|
|
/* Unlock the global data structure. */
|
| 234 |
|
|
mcapi_unlock_node_data();
|
| 235 |
|
|
}
|
| 236 |
|
|
|
| 237 |
|
|
/* The buffer is invalid. */
|
| 238 |
|
|
else
|
| 239 |
|
|
{
|
| 240 |
|
|
*mcapi_status = MCAPI_ERR_PARAMETER;
|
| 241 |
|
|
}
|
| 242 |
|
|
}
|
| 243 |
|
|
|
| 244 |
|
|
}
|
