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/*====================================================================*
*
* Copyright (c) 2013 Qualcomm Atheros, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted (subject to the limitations
* in the disclaimer below) provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* * Neither the name of Qualcomm Atheros nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
* GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
* COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* signed WaitForReset (struct plc * plc);
*
* plc.h
*
* poll the device using VS_SW_VER messages until no confirmation
* messages are received indicating that the firmware has stopped
* running; return 0 if the firmware stops within the allotted time
* or -1 if it does not or if transmission errors occur;
*
* this function cannot distinguish between a software reset and
* a power failure;
*
* retry is number of times to poll the device before returniung
* an error to indicate that the device failed to reset; timer is
* is the time between poll attempts;
*
*
* Contributor(s):
* Charles Maier
* Werner Henze
*
*--------------------------------------------------------------------*/
#ifndef WAITFORRESET_SOURCE
#define WAITFORRESET_SOURCE
#include <stdint.h>
#include <unistd.h>
#include <memory.h>
#include <sys/time.h>
#include "../plc/plc.h"
#include "../tools/timer.h"
#include "../tools/error.h"
signed WaitForReset (struct plc * plc)
{
struct channel * channel = (struct channel *)(plc->channel);
struct message * message = (struct message *)(plc->message);
struct timeval ts;
struct timeval tc;
unsigned timer = 0;
#ifndef __GNUC__
#pragma pack (push,1)
#endif
struct __packed vs_sw_ver_request
{
struct ethernet_hdr ethernet;
struct qualcomm_hdr qualcomm;
}
* request = (struct vs_sw_ver_request *) (message);
#ifndef __GNUC__
#pragma pack (pop)
#endif
if (gettimeofday (&ts, NULL) == -1)
{
error (1, errno, CANT_START_TIMER);
}
for (timer = 0; timer < plc->timer; timer = SECONDS (ts, tc))
{
memset (message, 0, sizeof (* message));
EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
QualcommHeader (&request->qualcomm, 0, (VS_SW_VER | MMTYPE_REQ));
plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
if (SendMME (plc) <= 0)
{
error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
return (-1);
}
if (ReadMME (plc, 0, (VS_SW_VER | MMTYPE_CNF)) < 0)
{
error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
return (-1);
}
if (gettimeofday (&tc, NULL) == -1)
{
error (1, errno, CANT_RESET_TIMER);
}
if (!plc->packetsize)
{
return (0);
}
}
return (-1);
}
#endif
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