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/* librfid - layer 3 protocol handler
* (C) 2005 by Harald Welte <laforge@gnumonks.org>
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <librfid/rfid_layer2.h>
#include <librfid/rfid_protocol.h>
static struct rfid_protocol *rfid_protocol_list;
struct rfid_protocol_handle *
rfid_protocol_init(struct rfid_layer2_handle *l2h, unsigned int id)
{
struct rfid_protocol *p;
struct rfid_protocol_handle *ph = NULL;
for (p = rfid_protocol_list; p; p = p->next) {
if (p->id == id) {
ph = p->fn.init(l2h);
break;
}
}
if (!ph)
return NULL;
ph->proto = p;
ph->l2h = l2h;
return ph;
}
int
rfid_protocol_open(struct rfid_protocol_handle *ph)
{
if (ph->proto->fn.open)
return ph->proto->fn.open(ph);
return 0;
}
int
rfid_protocol_transceive(struct rfid_protocol_handle *ph,
const unsigned char *tx_buf, unsigned int len,
unsigned char *rx_buf, unsigned int *rx_len,
unsigned int timeout, unsigned int flags)
{
return ph->proto->fn.transceive(ph, tx_buf, len, rx_buf, rx_len,
timeout, flags);
}
int
rfid_protocol_read(struct rfid_protocol_handle *ph,
unsigned int page,
unsigned char *rx_data,
unsigned int *rx_len)
{
if (ph->proto->fn.read)
return ph->proto->fn.read(ph, page, rx_data, rx_len);
else
return -EINVAL;
}
int
rfid_protocol_write(struct rfid_protocol_handle *ph,
unsigned int page,
unsigned char *tx_data,
unsigned int tx_len)
{
if (ph->proto->fn.write)
return ph->proto->fn.write(ph, page, tx_data, tx_len);
else
return -EINVAL;
}
int rfid_protocol_fini(struct rfid_protocol_handle *ph)
{
return ph->proto->fn.fini(ph);
}
int
rfid_protocol_close(struct rfid_protocol_handle *ph)
{
if (ph->proto->fn.close)
return ph->proto->fn.close(ph);
return 0;
}
int
rfid_protocol_register(struct rfid_protocol *p)
{
p->next = rfid_protocol_list;
rfid_protocol_list = p;
return 0;
}
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