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NAME

      fatm - device driver for Fore PCA200E ATM interfaces

SYNOPSIS

      device fatm
      device utopia
      device atm
 
      options NATM

DESCRIPTION

      The fatm device driver supports the FORE (now Marconi) PCA200E ATM inter‐
      face cards.  The driver interfaces with the natm(4) framework,
      netgraph(4) and HARP.  It provides only PVC services.  Signalling,
      ATMARP, ILMI and other higher layer protocols are implemented using
      netgraph(4) or HARP.
 
      For configuring the card for IP see natmip(4).  The following sysctls are
      recognized by the driver additionally to those handled by utopia(4):
 
      hw.atm.fatmN.stats
              Returns a device specific statistic list of uint32_t statistic
              counters.
 
      hw.atm.fatmN.istats
              Returns a list of uint32_t with internal driver statistics.
 
      hw.atm.fatmN.retry_tx
              If this is set packets are stuffed back into the interface’s send
              queue when the cards transmit queue is found to be full.  They
              are transmitted later.  If this is not set the packets are
              dropped.  It may be useful to set this if only UBR traffic is
              sent.
 
      hw.atm.fatmN.debug
              (Only if debugging enabled.)  These are debugging flags.  See
              src/sys/dev/fatm/if_fatmvar.h for the possible flags.
 
      The driver supports the media options sdh, noscramb and unassigned (see
      utopia(4)).

DIAGNOSTICS

      fatm0: <FORE PCA200E> mem 0xd5800000-0xd59fffff irq 9 at device 9.0 on pci0
      natm(4), natmip(4), utopia(4)

AUTHORS

      Harti Brandt 〈harti@FreeBSD.org〉

BUGS

      These cards can CBR shape a single VCC only.  It is currently possible to
      request more than one CBR connection.  In this case all the timing will
      be wrong.  See hatm(4) for a better card.