/*====================================================================*
*
* 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 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 <cmaier@qca.qualcomm.com>
* Nathaniel Houghton <nhoughto@qca.qualcomm.com>
* Lluis Paulet Gimbert <dimat.com>
*
*--------------------------------------------------------------------*/
#ifndef READPARAMETERS1_SOURCE
#define READPARAMETERS1_SOURCE
#include <stdint.h>
#include <unistd.h>
#include <memory.h>
#include "../tools/error.h"
#include "../tools/files.h"
#include "../plc/plc.h"
#include "../pib/pib.h"
signed ReadParameters1 (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_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, "Read Parameters from Device");
if (lseek (plc->pib.file, 0, SEEK_SET))
{
error (PLC_EXIT (plc), errno, FILE_CANTHOME, plc->pib.name);
return (1);
}
do
{
memset (message, 0, sizeof (* message));
EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
QualcommHeader (&request->qualcomm, 0, (VS_RD_MOD | MMTYPE_REQ));
plc->packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
request->MODULEID = VS_MODULE_PIB;
request->MLENGTH = HTOLE16 (length);
request->MOFFSET = HTOLE32 (offset);
if (SendMME (plc) <= 0)
{
error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
return (-1);
}
if (ReadMME (plc, 0, (VS_RD_MOD | MMTYPE_CNF)) <= 0)
{
error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
return (-1);
}
if (confirm->MSTATUS)
{
Failure (plc, PLC_WONTDOIT);
return (-1);
}
if (LE16TOH (confirm->MLENGTH) != length)
{
error (PLC_EXIT (plc), 0, PLC_ERR_LENGTH);
return (-1);
}
if (LE32TOH (confirm->MOFFSET) != offset)
{
error (PLC_EXIT (plc), 0, PLC_ERR_OFFSET);
return (-1);
}
length = LE16TOH (confirm->MLENGTH);
offset = LE32TOH (confirm->MOFFSET);
if (checksum32 (confirm->BUFFER, length, confirm->CHKSUM))
{
error (PLC_EXIT (plc), ECANCELED, "Bad Packet Checksum");
return (-1);
}
if (offset == extent)
{
struct pib_header * pib_header = (struct pib_header *) (confirm->BUFFER);
extent = LE16TOH (pib_header->PIBLENGTH);
}
if ((offset + length) > extent)
{
length = extent - offset;
}
if (lseek (plc->pib.file, offset, SEEK_SET) != (signed)(offset))
{
error (PLC_EXIT (plc), errno, FILE_CANTSEEK, plc->pib.name);
return (-1);
}
if (write (plc->pib.file, confirm->BUFFER, length) != (signed)(length))
{
error (PLC_EXIT (plc), errno, FILE_CANTSAVE, plc->pib.name);
return (-1);
}
offset += length;
}
while (offset < extent);
Confirm (plc, "Read %s", plc->pib.name);
return (0);
}
#endif