csu3_am335x/EVSE/GPL/open-plc-utils-0.3/plc/HostActionIndicate.c

/*====================================================================*
 *
 *   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
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 *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   signed HostActionIndicate (struct plc * plc);
 *
 *   plc.h
 *
 *   This test plugin requests come action from a local host using a
 *   VS_HOST_ACTION indication message; the message must be sent to a
 *   host, not a device; it can be used to verify that your host
 *   application correctly responds to device requests;
 *
 *   this function is provided so that you can emulate a device boot
 *   sequence by prompting a listening host to download firmware; it
 *   has no practical purpose other than development and test;
 *
 *
 *   Contributor(s):
 *      Charles Maier
 *
 *--------------------------------------------------------------------*/

#ifndef HOSTACTIONINDICATE_SOURCE
#define HOSTACTIONINDICATE_SOURCE

#include <stdint.h>
#include <memory.h>

#include "../plc/plc.h"
#include "../tools/error.h"
#include "../tools/memory.h"

signed HostActionIndicate (struct plc * plc)

{
	struct channel * channel = (struct channel *)(plc->channel);
	struct message * message = (struct message *)(plc->message);

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_host_action_ind
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MACTION;
		uint8_t MAJOR_VERSION;
		uint8_t MINOR_VERSION;
	}
	* indicate = (struct vs_host_action_ind *) (message);
	struct __packed vs_host_action_rsp
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MSTATUS;
	}
	* response = (struct vs_host_action_rsp *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	Request (plc, "Start Host Action");
	memset (message, 0, sizeof (* message));
	EthernetHeader (&indicate->ethernet, channel->peer, channel->host, channel->type);
	QualcommHeader (&indicate->qualcomm, 0, (VS_HOST_ACTION | MMTYPE_IND));
	plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
	indicate->MACTION = plc->action;
	if (SendMME (plc) <= 0)
	{
		error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
		return (-1);
	}
	while (ReadMME (plc, 0, (VS_HOST_ACTION | MMTYPE_RSP)) > 0)
	{
		if (response->MSTATUS)
		{
			Failure (plc, PLC_WONTDOIT);
			continue;
		}
		Confirm (plc, "Start.");
	}
	return (0);
}


#endif