    /*====================================================================*
     *
     *   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 EmulateHost (struct plc * plc);
     *
     *   plc.h
     *
     *   wait indefinitely for VS_HOST_ACTION messages; service requests
     *   only; it stops dead - like a bug! - on error;
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #ifndef EMULATEHOST_SOURCE
    #define EMULATEHOST_SOURCE

    #include <unistd.h>
    #include <memory.h>

    #include "../plc/plc.h"
    #include "../ether/channel.h"
    #include "../tools/error.h"
    #include "../tools/flags.h"
    #include "../tools/files.h"

    #include "../nvm/nvm.h"
    #include "../pib/pib.h"

    signed EmulateHost (struct plc * plc)

    {
    	struct channel * channel = (struct channel *)(plc->channel);
    	struct message * message = (struct message *)(plc->message);
    	static char const * actions [] =
    	{
    		"start device",
    		"store firmware",
    		"store parameters",
    		"update host",
    		"config memory",
    		"restore defaults",
    		"unknown"
    	};

    #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);

    #if 0

    	struct __packed vs_host_action_rsp
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_hdr qualcomm;
    		uint8_t MSTATUS;
    	}
    	* response = (struct vs_host_action_rsp *) (message);

    #endif

    #ifndef __GNUC__
    #pragma pack (pop)
    #endif

    	struct nvm_header1 nvm_header;
    	struct pib_header pib_header;
    	uint32_t offset;
    	char const * PIB = plc->PIB.name;
    	char const * NVM = plc->NVM.name;
    	signed timer = channel->timeout;
    	signed status = 0;
    	Request (plc, "Waiting for Host Action");
    	while (1)
    	{
    		channel->timeout = plc->timer;
    		status = ReadMME (plc, 0, (VS_HOST_ACTION | MMTYPE_IND));
    		channel->timeout = timer;
    		if (status < 0)
    		{
    			break;
    		}
    		if (status > 0)
    		{
    			printf ("\n");
    			if (indicate->MACTION < (sizeof (actions) / sizeof (char const *)))
    			{
    				Confirm (plc, "Host Action Request is (%d) %s.", indicate->MACTION, actions [indicate->MACTION]);
    			}
    			else
    			{
    				error (0, ENOTSUP, "Host Action 0x%0X", indicate->MACTION);
    				continue;
    			}
    			memcpy (channel->peer, indicate->ethernet.OSA, sizeof (channel->peer));
    			channel->timeout = timer;
    			if (indicate->MACTION == 0x00)
    			{
    				unsigned module = 0;
    				char firmware [PLC_VERSION_STRING];
    				if (HostActionResponse (plc))
    				{
    					return (-1);
    				}
    				if (lseek (plc->PIB.file, 0, SEEK_SET))
    				{
    					error (1, errno, FILE_CANTHOME, plc->PIB.name);
    				}
    				if (read (plc->PIB.file, &pib_header, sizeof (pib_header)) != sizeof (pib_header))
    				{
    					error (1, errno, FILE_CANTREAD, plc->PIB.name);
    				}
    				if (lseek (plc->PIB.file, 0, SEEK_SET))
    				{
    					error (1, errno, FILE_CANTHOME, plc->PIB.name);
    				}
    				if (BE16TOH (*(uint16_t *)(&pib_header)) < 0x0305)
    				{
    					offset = LEGACY_PIBOFFSET;
    				}
    				else if (BE16TOH (*(uint16_t *)(&pib_header)) < 0x0500)
    				{
    					offset = INT6x00_PIBOFFSET;
    				}
    				else
    				{
    					offset = AR7x00_PIBOFFSET;
    				}
    				if (WriteMEM (plc, &plc->PIB, 0, offset, LE16TOH (pib_header.PIBLENGTH)))
    				{
    					return (-1);
    				}
    				if (lseek (plc->NVM.file, 0, SEEK_SET))
    				{
    					error (1, errno, FILE_CANTHOME, plc->NVM.name);
    				}
    				if (read (plc->NVM.file, &nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
    				{
    					error (1, errno, FILE_CANTREAD, plc->NVM.name);
    				}
    				while (nvm_header.NEXTHEADER)
    				{
    					lseek (plc->NVM.file, LE32TOH (nvm_header.NEXTHEADER), SEEK_SET);
    					if (read (plc->NVM.file, &nvm_header, sizeof (nvm_header)) != sizeof (nvm_header))
    					{
    						error (1, errno, FILE_CANTREAD, plc->NVM.name);
    					}
    					module++;
    				}
    				if (WriteFirmware1 (plc, module, &nvm_header))
    				{
    					return (-1);
    				}
    				if (StartFirmware1 (plc, module, &nvm_header))
    				{
    					return (-1);
    				}
    				if (WaitForStart (plc, firmware, sizeof (firmware)))
    				{
    					return (-1);
    				}
    				if (_anyset (plc->flags, PLC_FLASH_DEVICE))
    				{
    					if (WriteNVM (plc))
    					{
    						return (-1);
    					}
    					if (WritePIB (plc))
    					{
    						return (-1);
    					}
    					if (FlashNVM (plc))
    					{
    						return (-1);
    					}
    				}
    				continue;
    			}
    			if (indicate->MACTION == 0x01)
    			{
    				if (HostActionResponse (plc))
    				{
    					return (-1);
    				}
    				close (plc->NVM.file);
    				if (ReadFirmware1 (plc))
    				{
    					return (-1);
    				}
    				if ((plc->NVM.file = open (plc->NVM.name = plc->nvm.name, O_BINARY|O_RDONLY)) == -1)
    				{
    					error (1, errno, "%s", plc->NVM.name);
    				}
    				if (ResetDevice (plc))
    				{
    					return (-1);
    				}
    				continue;
    			}
    			if (indicate->MACTION == 0x02)
    			{
    				if (HostActionResponse (plc))
    				{
    					return (-1);
    				}
    				close (plc->PIB.file);
    				if (ReadParameters1 (plc))
    				{
    					return (-1);
    				}
    				if ((plc->PIB.file = open (plc->PIB.name = plc->pib.name, O_BINARY|O_RDONLY)) == -1)
    				{
    					error (1, errno, "%s", plc->PIB.name);
    				}
    				if (ResetDevice (plc))
    				{
    					return (-1);
    				}
    				continue;
    			}
    			if (indicate->MACTION == 0x03)
    			{
    				if (HostActionResponse (plc))
    				{
    					return (-1);
    				}
    				close (plc->NVM.file);
    				if (ReadFirmware1 (plc))
    				{
    					return (-1);
    				}
    				if ((plc->NVM.file = open (plc->NVM.name = plc->nvm.name, O_BINARY|O_RDONLY)) == -1)
    				{
    					error (1, errno, "%s", plc->NVM.name);
    				}
    				close (plc->PIB.file);
    				if (ReadParameters1 (plc))
    				{
    					return (-1);
    				}
    				if ((plc->PIB.file = open (plc->PIB.name = plc->pib.name, O_BINARY|O_RDONLY)) == -1)
    				{
    					error (1, errno, "%s", plc->PIB.name);
    				}
    				if (ResetDevice (plc))
    				{
    					return (-1);
    				}
    				continue;
    			}
    			if (indicate->MACTION == 0x04)
    			{

    #if 0

    /*
     *	Due to an omission in the INT6300 BootLoader, responding to this VS_HOST_ACTION
     *      indication will suppress subsequent VS_HOST_ACTION messages and the device will
     *     	not request firmware and parameters; this may be corrected on the INT6400;
     */

    				if (HostActionResponse (plc))
    				{
    					return (-1);
    				}

    #endif

    				if (WriteCFG (plc))
    				{
    					return (-1);
    				}

    /*
     *	At this point, one could download firmware and parameters without waiting for
     *	further  requests from the device; however, we elect to wait for them since it
     *	is 'good form'; a device should send code 0x00 within 10 seconds of this one;
     */

    				continue;
    			}
    			if (indicate->MACTION == 0x05)
    			{
    				if (HostActionResponse (plc))
    				{
    					return (-1);
    				}
    				close (plc->NVM.file);
    				if ((plc->NVM.file = open (plc->NVM.name = NVM, O_BINARY|O_RDONLY)) == -1)
    				{
    					error (1, errno, "%s", plc->NVM.name);
    				}
    				close (plc->PIB.file);
    				if ((plc->PIB.file = open (plc->PIB.name = PIB, O_BINARY|O_RDONLY)) == -1)
    				{
    					error (1, errno, "%s", plc->PIB.name);
    				}
    				if (ResetDevice (plc))
    				{
    					return (-1);
    				}
    				continue;
    			}
    			error (0, ENOSYS, "Host Action 0x%0X", indicate->MACTION);
    		}
    	}
    	return (0);
    }

    #endif

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