mirror of
https://github.com/KastnerRG/riffa.git
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132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
// ----------------------------------------------------------------------
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// Copyright (c) 2016, The Regents of the University of California All
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// 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
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// * Neither the name of The Regents of the University of California
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// nor the names of its contributors may be used to endorse or
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// promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL REGENTS OF THE
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// UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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// TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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// USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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// DAMAGE.
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// ----------------------------------------------------------------------
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/*
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* Filename: riffa.c
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* Version: 2.0
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* Description: Linux PCIe communications API for RIFFA.
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* Author: Matthew Jacobsen
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* History: @mattj: Initial release. Version 2.0.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "riffa.h"
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struct fpga_t
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{
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int fd;
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int id;
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};
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fpga_t * fpga_open(int id)
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{
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fpga_t * fpga;
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// Allocate space for the fpga_dev
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fpga = (fpga_t *)malloc(sizeof(fpga_t));
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if (fpga == NULL)
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return NULL;
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fpga->id = id;
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// Open the device file.
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fpga->fd = open("/dev/" DEVICE_NAME, O_RDWR | O_SYNC);
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if (fpga->fd < 0) {
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free(fpga);
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return NULL;
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}
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return fpga;
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}
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void fpga_close(fpga_t * fpga)
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{
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// Close the device file.
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close(fpga->fd);
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free(fpga);
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}
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int fpga_send(fpga_t * fpga, int chnl, void * data, int len, int destoff,
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int last, long long timeout)
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{
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fpga_chnl_io io;
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io.id = fpga->id;
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io.chnl = chnl;
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io.len = len;
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io.offset = destoff;
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io.last = last;
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io.timeout = timeout;
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io.data = (char *)data;
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return ioctl(fpga->fd, IOCTL_SEND, &io);
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}
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int fpga_recv(fpga_t * fpga, int chnl, void * data, int len, long long timeout)
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{
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fpga_chnl_io io;
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io.id = fpga->id;
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io.chnl = chnl;
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io.len = len;
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io.timeout = timeout;
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io.data = (char *)data;
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return ioctl(fpga->fd, IOCTL_RECV, &io);
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}
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void fpga_reset(fpga_t * fpga)
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{
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ioctl(fpga->fd, IOCTL_RESET, fpga->id);
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}
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int fpga_list(fpga_info_list * list) {
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int fd;
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int rc;
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fd = open("/dev/" DEVICE_NAME, O_RDWR | O_SYNC);
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if (fd < 0)
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return fd;
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rc = ioctl(fd, IOCTL_LIST, list);
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close(fd);
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return rc;
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}
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