usbsksp - Keyspan USB to serial converter driver
The usbsksp driver is a loadable STREAMS and USBA (Solaris
USB architecture) compliant client driver that provides basic asynchronous
communication support for Keyspan USB-to-serial converters. The usbsksp
driver supports the Keyspan USA19HS, USA49WG and USA49WLC 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 controllers). The Keyspan
USA49WLC model requires a firmware package that is no longer publicly
available. 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
mechanism. These devices are commonly known as 'dial-out' lines.
Unlike onboard serial ports, the usbsksp ports cannot serve
as a local serial console.
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), 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(4I).
The usbsksp driver supports the standard set of termio(4I) ioctl
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.
An open() fails under the following conditions:
The unit being opened does not exist.
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.
The unit has been marked as exclusive-use by another
process with a TIOCEXCL ioctl() call.
USB device I/O error.
32-bit x86 ELF kernel module.
64-bit x86 ELF kernel module.
64-bit SPARC ELF kernel module.
dial-out tty lines.
dial-in tty lines.
See attributes(7) for descriptions of the following attributes:
strconf(1), tip(1), uucp(1C), ioctl(2),
open(2), termios(3C), usba(4D), termio(4I),
ldterm(4M), ttcompat(4M), attributes(7),
In addition to being logged, the following messages may appear on the system
console. All messages are formatted in the following manner:
||SPARC, x86, PCI-based systems
Warning: <device path> (usbsksp<instance num>): Error Message...
Device was disconnected while open. Data may have been
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
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 device. Please disconnect
the device and reconnect the original device to the same port.
Device has been reconnected, but data may have been
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
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.
No valid firmware available for Keyspan usa49wlc usb-to-serial
adapter. Please download it from Keyspan website and install
By default, only an empty firmware package is installed
for the usa49wlc model. You will need to obtain a copy of the SUNWukspfw
package and install it.
The following messages may be logged into the system log. They are
formatted in the following manner:
<device path><usbsksp<instance number>): message...
Data was lost.