SoftwareDesign
/
csu3_am335x


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229
							<?xml version='1.0' encoding='iso-8859-1'?>
<!doctype html public '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>
<html xmlns='http://www.w3c.org/1999/xhtml' lang='en-us'>
	<head>
		<title>
			ReadParameters1.c
			</title>
		<meta http-equiv='content-type' content='text/html;iso-8859-1'/>
		<meta name='generator' content='motley-tools 1.9.4 13:40:33 Feb 18 2015'/>
		<meta name='author' content='cmaier@cmassoc.net'/>
		<meta name='robots' content='noindex,nofollow'/>
		<link href='toolkit.css' rel='stylesheet' type='text/css'/>
		</head>
	<body>
		<div class='headerlink'>
			[<a href='ReadParameterBlock.c.html' title=' ReadParameterBlock.c '>PREV</a>]
			[<a href='toolkit.html' title=' Index '>HOME</a>]
			[<a href='ReadParameters2.c.html' title=' ReadParameters2.c '>NEXT</a>]
			</div>
<pre>
/*====================================================================*
 *
 *   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 &quot;AS IS&quot; 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 ReadParameters1 (struct plc * plc);
 *
 *   plc.h
 *
 *   Read the PIB Image from an INT6x00 or AR7x00 using as many
 *   VS_RD_MOD messages as needed; Write image blocks to file as
 *   they are read;
 *
 *   the objective here is to read the PIB module in 1024 byte blocks
 *   until the module offset equals or exceeds the PIB length; we do
 *   not know the PIB length until we have read the header contained
 *   in the first block at OFFSET 0;
 *
 *   MOFFSET and MLENGTH fields occupy different offsets in REQ and CNF
 *   messages; we exploit that by initializing them using CNF message
 *   offsets then copying values into REQ message offsets before each
 *   read; this works because confirmation messages always return all
 *   the data we request or nothing at all;
 *
 *
 *   Contributor(s):
 *      Charles Maier &lt;cmaier@qca.qualcomm.com&gt;
 *      Nathaniel Houghton &lt;nhoughto@qca.qualcomm.com&gt;
 *      Lluis Paulet Gimbert &lt;dimat.com&gt;
 *
 *--------------------------------------------------------------------*/

#ifndef READPARAMETERS1_SOURCE
#define READPARAMETERS1_SOURCE

#include &lt;stdint.h&gt;
#include &lt;unistd.h&gt;
#include &lt;memory.h&gt;

#include &quot;../tools/error.h&quot;
#include &quot;../tools/files.h&quot;
#include &quot;../plc/plc.h&quot;
#include &quot;../pib/pib.h&quot;

signed ReadParameters1 (struct plc * plc)

{
	struct channel * channel = (struct channel *)(plc-&gt;channel);
	struct message * message = (struct message *)(plc-&gt;message);

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

	struct __packed vs_rd_mod_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MODULEID;
		uint8_t MACCESS;
		uint16_t MLENGTH;
		uint32_t MOFFSET;
		uint8_t MSECRET [16];
	}
	* request = (struct vs_rd_mod_request *) (message);
	struct __packed vs_rd_mod_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MSTATUS;
		uint8_t RESERVED1 [3];
		uint8_t MODULEID;
		uint8_t RESERVED;
		uint16_t MLENGTH;
		uint32_t MOFFSET;
		uint32_t CHKSUM;
		uint8_t BUFFER [PLC_RECORD_SIZE];
	}
	* confirm = (struct vs_rd_mod_confirm *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	uint32_t extent = 0;
	uint32_t offset = 0;
	uint16_t length = PLC_RECORD_SIZE;
	Request (plc, &quot;Read Parameters from Device&quot;);
	if (lseek (plc-&gt;pib.file, 0, SEEK_SET))
	{
		error (PLC_EXIT (plc), errno, FILE_CANTHOME, plc-&gt;pib.name);
		return (1);
	}
	do
	{
		memset (message, 0, sizeof (* message));
		EthernetHeader (&amp;request-&gt;ethernet, channel-&gt;peer, channel-&gt;host, channel-&gt;type);
		QualcommHeader (&amp;request-&gt;qualcomm, 0, (VS_RD_MOD | MMTYPE_REQ));
		plc-&gt;packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
		request-&gt;MODULEID = VS_MODULE_PIB;
		request-&gt;MLENGTH = HTOLE16 (length);
		request-&gt;MOFFSET = HTOLE32 (offset);
		if (SendMME (plc) &lt;= 0)
		{
			error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
			return (-1);
		}
		if (ReadMME (plc, 0, (VS_RD_MOD | MMTYPE_CNF)) &lt;= 0)
		{
			error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
			return (-1);
		}
		if (confirm-&gt;MSTATUS)
		{
			Failure (plc, PLC_WONTDOIT);
			return (-1);
		}
		if (LE16TOH (confirm-&gt;MLENGTH) != length)
		{
			error (PLC_EXIT (plc), 0, PLC_ERR_LENGTH);
			return (-1);
		}
		if (LE32TOH (confirm-&gt;MOFFSET) != offset)
		{
			error (PLC_EXIT (plc), 0, PLC_ERR_OFFSET);
			return (-1);
		}
		length = LE16TOH (confirm-&gt;MLENGTH);
		offset = LE32TOH (confirm-&gt;MOFFSET);
		if (checksum32 (confirm-&gt;BUFFER, length, confirm-&gt;CHKSUM))
		{
			error (PLC_EXIT (plc), ECANCELED, &quot;Bad Packet Checksum&quot;);
			return (-1);
		}
		if (offset == extent)
		{
			struct pib_header * pib_header = (struct pib_header *) (confirm-&gt;BUFFER);
			extent = LE16TOH (pib_header-&gt;PIBLENGTH);
		}
		if ((offset + length) &gt; extent)
		{
			length = extent - offset;
		}
		if (lseek (plc-&gt;pib.file, offset, SEEK_SET) != (signed)(offset))
		{
			error (PLC_EXIT (plc), errno, FILE_CANTSEEK, plc-&gt;pib.name);
			return (-1);
		}
		if (write (plc-&gt;pib.file, confirm-&gt;BUFFER, length) != (signed)(length))
		{
			error (PLC_EXIT (plc), errno, FILE_CANTSAVE, plc-&gt;pib.name);
			return (-1);
		}
		offset += length;
	}
	while (offset &lt; extent);
	Confirm (plc, &quot;Read %s&quot;, plc-&gt;pib.name);
	return (0);
}

#endif


</pre>
		<div class='footerlink'>
			[<a href='ReadParameterBlock.c.html' title=' ReadParameterBlock.c '>PREV</a>]
			[<a href='toolkit.html' title=' Index '>HOME</a>]
			[<a href='ReadParameters2.c.html' title=' ReadParameters2.c '>NEXT</a>]
			</div>
		</body>
	</html>