NAME

       plcmdio16 - Qualcomm Atheros 16-bit MDIO Register Editor

SYNOPSIS

       plcmdio16 [options] [device] [device] [...]

DESCRIPTION

       Read  or  write  generic  MDIO  registers  using  the  Qualcomm  Atheros  VS_MDIO_COMMAND vendor-specific
       management message.  The default operation is to read a register.  Registers are written only if data  is
       specified on the command line.  This program replaces program int6kmdio.

       This  program  writes  MDIO  instructions  using  802.3  Clause 22 (phy, reg, data and mask) format.  See
       program plcmdio162 for a similar program to write instructions using 802.3ae Clause 45 (address, data and
       mask) format.

       This program is part of the Qualcomm Atheros Powerline Toolkit.  It replaces  legacy  program  int6kmdio.
       See the plc man page for an overview and installation instructions.

OPTIONS

       -d data
              A  16-bit  data  value  to  be  inserted into the specified register.  The specified data value is
              written when this option is present; otherwise the specified register is read and the  content  is
              displayed.   Data values may be expressed in decimal, hexadecimal or binary notation.  Hexadecimal
              values are prefixed with "0x" or "0X".  Binary values are prefixed with "0b" or "0B".

       -e     Redirects stderr messages to stdout.  By convention status  and  error  messages  are  printed  on
              stderr while primary program output is printed on stdout.  This option prints all output on stdout
              in cases where this is desired.

       -i interface
              Select  the  host  Ethernet  interface.   All  requests  are sent via this host interface and only
              reponses received via this host interface are recognized.  The default interface is  eth1  because
              most  people  use eth0 as their principle network connection; however, if environment string "PLC"
              is defined then it takes precedence over the default interface.  This option then takes precedence
              over either default.

       -p address
              The 5-bit PHY address.  Some devices may not support all possible  addresses.   Addresses  may  be
              expressed  in  decimal,  hexadecimal or binary notation.  Hexadecimal values must be prefixed with
              "0x" or "0X".  Binary values must be prefixed with "0b" or "0B".

       -q     Suppresses status messages on stderr.

       -r register
              The 5-bit register address.   Addresses  may  be  expressed  in  decimal,  hexadecimal  or  binary
              notation.   Hexadecimal values must be prefixed with "0x" or "0X".  Binary values must be prefixed
              with "0b" or "0B".  Some devices may not support all possible addresses.

       -v     Prints additional information on stdout.  In  particular,  this  option  dumps  outgoing  Ethernet
              packets on stdout.

       -?,--help
              Displays  program help information on stderr.  This option takes precedence over all other options
              on the command line except version information.

       -!,--version
              Displays program version information on stderr.  This  option  takes  precedence  over  all  other
              options on the command line except help information.  Use this option when sending screen dumps to
              Atheros technical staff.

ARGUMENTS

       device The  MAC  address of some powerline device.  More than one address may be specified.  If more than
              one address is specified then operations are performed  on  each  device  in  turn.   The  default
              address is local.  See DEVICES for information about symbolic device addresses.

DEVICES

       Powerline  devices  use  Ethernet  Media Access Control (MAC) addresses.  A MAC address is a 48-bit value
       entered as 12 hexadecimal digits in upper, lower or mixed character case.  Octets may be  separated  with
       colons  for  clarity.  For example, "00b052000001", "00:b0:52:00:00:01" and "00b052:000001" are valid and
       equivalent.

       The following MAC addresses are special and may be entered by name instead of number.

       all    Same as "broadcast".

       broadcast
              A synonym for the Ethernet broadcast address,  FF:FF:FF:FF:FF:FF.   All  devices,  whether  local,
              remote  or  foreign recognize messages sent to this address.  A remote device is any device at the
              far end of a powerline connection.  A foreign device is any device not manufactured by Atheros.

       local  A  synonym  for  the  Qualcomm  Atheros  vendor   specific   Local   Management   Address   (LMA),
              00:B0:52:00:00:01.   All  local  Atheros  devices  recognize  this  address but remote and foreign
              devices do not.  A remote device is any device at the  far  end  of  a  powerline  connection.   A
              foreign device is any device not manufactured by Atheros.

REFERENCES

       See the Qualcomm Atheros HomePlug AV Firmware Technical Reference Manual for technical information.

DISCLAIMER

       Atheros  HomePlug  AV Vendor Specific Management Message structure and content is proprietary to Qualcomm
       Atheros, Ocala FL USA.  Consequently, public information may not be available.  Qualcomm Atheros reserves
       the right to modify message structure and content in future firmware releases without any  obligation  to
       notify or compensate users of this program.

EXAMPLES

       None.

SEE ALSO

       plc(1), int6kmdio(1), plcmod(1), plcmdio32(1), mdioblock(1), mdioblock2(1), mdiodump(1), mdiogen(1)

CREDITS

        Charles Maier

open-plc-utils-0.0.3                              November 2013                                     plcmdio16(1)