usbser_edge(7D) Devices usbser_edge(7D)NAMEusbser_edge - Digi Edgeport USB to serial converter driver
SYNOPSIS
#include <fcntl.h>
#include <sys/termios.h>
usbser_edge@unit
DESCRIPTION
The usbser_edge driver is a loadable STREAMS and USBA (Solaris USB
architecture) compliant client driver that provides basic asynchronous
communication support for Digi Edgeport USB-to-serial converters. Sup‐
ported devices include Edgeport/1, Edgeport/2, Edgeport/21, Edgeport/4,
Edgeport/421, Edgeport/8, and Edgeport/416. Serial device streams are
built with appropriate modules that are pushed atop the usbser_edge
driver by the autopush(1M) facility.
The usbser_edge module supports the termio(7I) 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(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 automatically 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.
To allow a single tty line to be connected to a modem and used for
incoming and outgoing calls, a special feature is available that is
controlled by the minor device number. By accessing through device log‐
ical 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 usbser_edge 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-block‐
ing/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 modem disconnect
event, as defined in termio(7I).
IOCTLS
The usbser_edge driver supports the standard set of termio(7I) 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/usbser_edge
32-bit x86 ELF kernel module
/kernel/drv/amd64/usbser_edge
64-bit x86 ELF kernel module
/kernel/drv/sparcv9/usbser_edge
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 attributes:
┌─────────────────────────────┬──────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼──────────────────────────────┤
│Architecture │SPARC, x86, PCI-based systems │
├─────────────────────────────┼──────────────────────────────┤
│Availability │SUNWuedg │
└─────────────────────────────┴──────────────────────────────┘
SEE ALSOstrconf(1), tip(1), uucp(1C), autopush(1M), ioctl(2), open(2),
termios(3C), attributes(5), usba(7D), termio(7I), ldterm(7M), ttcom‐
pat(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: <device path> (usbser_edge<instance num>): Error Message...
Device was disconnected while open. Data may have been lost.
The device was hot-removed or powered off while it was open and a
possible data transfer was in progress.
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><usbser_edge<instance number>): message...
Input overrun
Data was lost.
SunOS 5.10 19 Feb 2006 usbser_edge(7D)
