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usbsksp(4d)

usbsksp(4D)               Device Drivers & /dev files              usbsksp(4D)

NAME
       usbsksp - Keyspan USB to serial converter driver

SYNOPSIS
       #include <fcntl.h>


       #include <sys/termio.h>


       usbskpsp@unit

DESCRIPTION
       The  usbsksp  driver is a loadable STREAMS and USBA (Solaris USB archi‐
       tecture) compliant client driver that provides basic asynchronous  com‐
       munication  support  for  Keyspan USB-to-serial converters. The usbsksp
       driver supports the Keyspan USA19HS and USA49WG models. By default, the
       USA19HS and USA49WG models are compatible with the usbsksp  driver  and
       no configuration or installation steps are required. (The USA49WG model
       is  a  USB  2.0 device conforming to Universal Serial Bus Specification
       2.0 and the USB 2.0 host controller is required to support the  USA49WG
       model.  Note  that the USA49WG is not compatible with USB 1.1 host con‐
       trollers). Serial device streams are  built  with  appropriate  modules
       that are pushed atop the usbsksp driver by the autopush(8) facility.


       The  usbsksp  module  supports  the termio(4I) device control functions
       specified by flags in the c_cflag word of the termios structure, and by
       the IGNBRK, IGNPAR, PARMRK and INPCK flags in the c_iflag word  of  the
       termios  structure. All other termio(4I) functions must be performed by
       STREAMS modules pushed atop the driver. When a device  is  opened,  the
       ldterm(4M)  and  ttcompat(4M)  STREAMS modules are automatically pushed
       on top of the stream, providing the standard termio(4I) interface.


       Use device logical names /dev/term/[0-9]* to access the  serial  ports.
       These  names are typically used to provide a logical access point for a
       dial-in line that is used with a modem.


       A special feature (controlled by the minor device number) is  available
       that  enables a single tty line to be connected to a modem and used for
       incoming and outgoing calls. By accessing through device  logical  name
       /dev/cua/[0-9]*,  you can open a port without the carrier detect signal
       being asserted, either through hardware or an equivalent software mech‐
       anism. These devices are commonly known as 'dial-out' lines.


       Unlike onboard serial ports, the usbsksp ports cannot serve as a  local
       serial console.

APPLICATION PROGRAMMING INTERFACE
       A dial-in line can be opened only if the corresponding dial-out line is
       closed.  A  blocking  /dev/term  open  waits until the /dev/cua line is
       closed (which drops Data Terminal Ready,  after  which  Carrier  Detect
       usually  drops  as  well) and carrier is detected again. A non-blocking
       /dev/term open returns an error if the /dev/cua is open.


       If the /dev/term line is opened successfully (usually only when carrier
       is recognized on the modem), the corresponding /dev/cua line cannot  be
       opened.  This  allows  a  modem and port to be used for dial-in (by en‐
       abling the line for login in /etc/inittab) or dial-out (by tip(1)) when
       no one is logged in on the line.


       Device hot-removal is functionally equivalent  to  a  modem  disconnect
       event, as defined in termio(4I).

IOCTLS
       The usbsksp driver supports the standard set of termio(4I) ioctl calls.


       Input and output line speeds can be set to the following baud rates: 0,
       50,  75,  110,  134,  150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600,
       19200, 38400, 57600, 115200, or 230400. Input and  output  line  speeds
       cannot be set independently. For example, when the output speed is set,
       the input speed is automatically set to the same speed.

ERRORS
       An open() fails under the following conditions:

       ENXIO    The unit being opened does not exist.


       EBUSY    The  /dev/cua  (dial-out)  device  is  being  opened while the
                /dev/term (dial-in device) is open, or the dial-in  device  is
                being opened with a no-delay open while the dial-out device is
                open.


       EBUSY    The  unit  has been marked as exclusive-use by another process
                with a TIOCEXCL ioctl() call.


       EIO      USB device I/O error.


FILES
       /kernel/drv/amd64/usbsksp

           64-bit x86 ELF kernel module


       /kernel/drv/sparcv9/usbsksp

           64-bit SPARC ELF kernel module


       /dev/cua/[0-9]*

           dial-out tty lines


       /dev/term/[0-9]*

           dial-in tty lines


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ ArchitectureSPARC, x86 _ Availabilitydriver/serial/usb‐
       sksp


SEE ALSO
       strconf(1),   tip(1),   ioctl(2),   open(2),   termios(3C),   usba(4D),
       termio(4I), ldterm(4M), ttcompat(4M), attributes(7), autopush(8)

DIAGNOSTICS
       In addition to being logged, the following messages may appear  on  the
       system console. All messages are formatted in the following manner:

         Warning: <device path> (usbsksp<instance num>): Error Message...


       Device was disconnected while open. Data may have been lost.

           The  device  has  been hot-removed or powered off while it was open
           and a possible data transfer  was  in  progress.  The  job  may  be
           aborted.


       Device is not identical to the previous one on this port. Please dis‐
       connect and reconnect.

           The  device  was  hot-removed  while open. A new device was hot-in‐
           serted which is not identical to the original device.  Please  dis‐
           connect  the  device  and reconnect the original device to the same
           port.


       Device has been reconnected, but data may have been lost.

           The device that was hot-removed from its USB port has  been  re-in‐
           serted  again to the same port. It is available for access but data
           from a previous transfer may be lost.


       Cannot access <device>. Please reconnect.

           This device has been disconnected because a device other  than  the
           original one has been inserted. The driver informs you of this fact
           by displaying the name of the original device.



       The following messages may be logged into the system log. They are for‐
       matted in the following manner:

         <device path><usbsksp<instance number>): message...


       Input overrun    Data was lost.


Oracle Solaris 11.4               14 Jun 2023                      usbsksp(4D)
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