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usbsprl(4d)

Device Drivers & /dev files                                        usbsprl(4D)



NAME
       usbsprl - Prolific PL2303 USB to serial converter driver

SYNOPSIS
       #include <fcntl.h>


       #include <sys/termio.h>


       usbsprl@unit

DESCRIPTION
       The  usbsprl  driver is a loadable STREAMS and USBA (Solaris USB archi‐
       tecture) compliant client driver that provides basic asynchronous  com‐
       munication  support  for Prolific PL2303 USB-to-serial converters. Sup‐
       ported devices include PL2303H, PL2303HX  and  PL2303X.  Serial  device
       streams  are  built  with  appropriate modules that are pushed atop the
       usbsprl driver by the autopush(8) facility.


       The usbsprl 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.

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
       enabling 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 usbsprl driver supports the standard set of termio(4I) ioctl calls.


       Input and output line speeds can be set to the  following  baud  rates:
       75,  150,  300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600,
       115200, 230400 or 460800. 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/usbsprl

           64-bit x86 ELF kernel module.


       /kernel/drv/sparcv9/usbsprl

           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, PCI-based systems _ Availabili‐
       tydriver/serial/usbsprl


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> (usbsprl<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-
           inserted 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-
           inserted  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><usbsprl<instance number>): message...


       Input overrun.

           Data was lost.




Oracle Solaris 11.4               19 Feb 2019                      usbsprl(4D)
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