ia(7)                          DG/UX R4.11MU05                         ia(7)


NAME
       ia - Interphase 5515 ATM Network Interface for PCI

SYNOPSIS
       /dev/ia

       /dev/net/ia(parent-bus,pci-slot)

DESCRIPTION
       The ia device driver allows a DG/UX system that includes one or more
       Interphase 5515 ATM adapters to access an ATM (Asynchronous Transfer
       Mode) network.  To configure these devices into your system, you must
       add one or more device name entries of the non-clone form described
       in the synopsis above to the DG/UX system configuration file.  There
       are two types of device nodes created by the ia driver:

       /dev/ia
              is a clone Streams driver used for device I/O.  There is only
              one such node per system that contains one or more Interphase
              5515 ATM adapters.

       /dev/net/ia(parent-bus([parent-bus-number]),pci-slot)
              is a non-clone Streams device driver.  There is one such node
              for every 5515 ATM adapter in the system.  The parameters in
              this device name have the following meaning:

       ·   The parent-bus parameter is itself a device name, representing
           the PCI bus device to which the controller is attached (pci(0),
           for example).  There is no default value for this parameter; it
           must always be specified explicitly.

       ·   The pci-slot parameter is a hexadecimal number in the range 0
           through 1F; it represents the PCI device number ("slot number")
           used by the device.  There is no default value for this
           parameter; it must always be specified explicitly.



FILES
       Each standard ia device creates a single character-special device
       node when it is configured, with the pathname:

           /dev/net/ia(parent-bus,slot-num)


       The chk.devlink command is responsible for creating and maintaining
       additional links to each ia device node, with pathnames of the form
       /dev/net/ia[0-n] and /dev/ia[0-n].  See the chk.devlink(1M) and
       devlinktab(4M) man pages for details.  This device is a non-clone
       device and only supports one open at a time.

       Additionally, a single character-special device name is created for
       the clone device with pathname:

           /dev/ia


       There is only one of these device node created in a system regardless
       of the number of physical adapters.  The ia device driver is a
       clonable Streams driver.  This means that you can open a single
       /dev/ia device node to access any unused minor device.  Each
       subsequent access of the node via the open(2) system call allocates a
       separate Stream (minor number) to the device driver.


EXAMPLES
       The following entry in a DG/UX configuration file configures an ia
       device in the PCI slot d on the primary PCI bus:

       ia(pci(0),d)




SEE ALSO
       iastat(1M), li(7), ci(7), pa(7), chk.devlink(1M), devlinktab(1M),
       pci_bus(7)

NOTES
       The ia driver can not function alone.  It requires services provided
       by either ci(7),li(7), or pa(7).




Licensed material--property of copyright holder(s)