Devices usbsprl(7D)
NAME
usbsprl - Prolific PL2303 USB to serial converter driver
SYNOPSIS
#include
#include
usbsprl@unit
DESCRIPTION
The usbsprl driver is a loadable STREAMS and USBA (Solaris
USB architecture) compliant client driver that provides
basic asynchronous communication support for Prolific PL2303
USB-to-serial converters. Supported devices include PL2303H,
PL2303HX and PL2303X. Serial device streams are built with
appropriate modules that are pushed atop the usbsprl driver
by the autopush(1M) facility.
The usbsprl module supports the termio(7I) device control
functions specified by flags in the c_cflag word of the ter-
mios structure, and by the IGNBRK, IGNPAR, PARMRK and
INPCK flags in the c_iflag word of the termios structure.
All other termio(7I) functions must be performed by STREAMS
modules pushed atop the driver. When a device is opened, the
ldterm(7M) and ttcompat(7M) STREAMS modules are automati-
cally pushed on top of the stream, providing the standard
termio(7I) 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 access-
ing 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
mechanism. 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
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Devices usbsprl(7D)
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), or uucp(1C)) when no
one is logged in on the line.
Device hot-removal is functionally equivalent to a modem
disconnect event, as defined in termio(7I).
IOCTLS
The usbsprl driver supports the standard set of termio(7I)
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/usbsprl
32-bit x86 ELF kernel module.
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Devices usbsprl(7D)
/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(5) for descriptions of the following attri-
butes:
_____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|______________________________|
| Architecture | SPARC, x86, PCI-based systems|
|_____________________________|______________________________|
| Availability | driver/serial/usbsprl |
|_____________________________|______________________________|
SEE ALSO
strconf(1), tip(1), uucp(1C), autopush(1M), ioctl(2),
open(2), termios(3C), attributes(5), usba(7D), termio(7I),
ldterm(7M), ttcompat(7M)
DIAGNOSTICS
In addition to being logged, the following messages may
appear on the system console. All messages are formatted in
the following manner:
Warning: (usbsprl): Error Message...
Device was disconnected while open. Data may have been lost.
The device has been hot-removed or powered off while it
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Devices usbsprl(7D)
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 disconnect and reconnect.
The device was hot-removed while open. A new device was
hot-inserted which is not identical to the original dev-
ice. Please disconnect the device and reconnect the ori-
ginal 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 previou transfer may be
lost.
Cannot access . 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 formatted in the following manner:
): message...
Input overrun.
Data was lost.
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