2ae1fdab5a
In the FreeBSD base system, there are only two utilities that use struct tty, namely pstat and sicontrol. The sicontrol utility calls the TCSI_TTY ioctl(), which copies struct tty back to userspace. sicontrol should not have this functionality. The same data is already provided by pstat. If we really want to be able to export these numbers through a file descriptor to userspace, we can export struct xtty, which should provide a better abstraction. The ttystat option was only used as a debugging aid. This makes sicontrol compile in the mpsafetty branch. Reviewed by: peter Approved by: philip (mentor)
110 lines
2.6 KiB
Groff
110 lines
2.6 KiB
Groff
.\" $FreeBSD$
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.\"
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.Dd September 26, 1995
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.Dt SICONTROL 8
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.Os
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.Sh NAME
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.Nm sicontrol
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.Nd Specialix SI/XIO driver configuration and debugging
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.Sh SYNOPSIS
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.Nm
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device
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.Ar command Op Ar param ...
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.Sh DESCRIPTION
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The
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.Nm
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utility is used to configure and monitor the SI/XIO device driver.
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.Pp
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The
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.Nm
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utility operates on the specified
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.Ar device
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to indicate which port is to be used.
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.Pp
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The special
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.Ar device
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string `-' is used to indicate the global driver settings instead.
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.Pp
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A
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.Pa /dev/
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is included if necessary.
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.Pp
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The following commands are used for the global settings and should be
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specified with the '-' device name:
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.Bl -tag -width 4n
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.It Cm int_throttle Op Cm value
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Configure the `aggregate interrupt throttle value'.
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The maximum number of host adapter interrupts per second is determined by:
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.Pp
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.Ar "controller CPU clock / (8 * int_throttle)"
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.Pp
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The default value at boot time is 25000.
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The host adapter cpu clock is
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25MHz.
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This gives a maximum interrupt rate of about 125 interrupts per
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second.
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.Pp
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Lowering this value will increase the rate in which the host adapter can
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interrupt the operating system for attention.
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.\"
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.It Cm rxint_throttle Op Cm value
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Configure the receiver interrupt throttle value.
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The default value of 4 at boot time allows an interrupt rate of
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approximately 25.
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.Pp
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Lowering this value will increase the rate in which the host adapter can
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interrupt the operating system to empty the receiver fifos.
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.\"
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.It Cm nport
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Return the number of ports under the control of the device driver.
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.El
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.Pp
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The following commands are used for the individual ports and should be
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specified with a device name from
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.Pa /dev :
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.Bl -tag -width 4n
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.It Cm mstate
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Show the current incoming modem control signals.
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.It Cm ccbstat
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Show the current "ccb" structure for the specified port.
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This is not of
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much use outside of debugging the driver and determining why a port is
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wedged.
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.El
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.Sh FILES
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.Bl -tag -width /dev/si_control -compact
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.It Pa /dev/si_control
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global driver control file for use by
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.Nm
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.It Pa /dev/ttyA*
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terminal control ports
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.It Pa /dev/ttyiA*
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initial termios state devices, for use by
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.Xr stty 1
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.It Pa /dev/ttylA*
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locked termios state devices, for use by
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.Xr stty 1
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.El
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.Sh DIAGNOSTICS
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Generally self explanatory.....
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.Sh SEE ALSO
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.Xr stty 1 ,
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.Xr si 4 ,
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.Xr termios 4 ,
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.Xr tty 4 ,
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.Xr comcontrol 8
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.Sh HISTORY
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The
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.Nm
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utility is loosely based on a utility called
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.Nm siconfig
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which was written by
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.An Andy Rutter Aq andy@acronym.co.uk
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.Pp
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Specialix International do not support this device driver in any way.
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.Sh AUTHORS
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.An Peter Wemm Aq peter@FreeBSD.org
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.Sh BUGS
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Bound to be many...
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:-)
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