8 .Nd Specialix SI/XIO driver configuration and debugging
12 .Ar command Op Cm Ar param ...
15 is used to configure and monitor the SI/XIO device driver.
18 operates on the specified
20 to indicate which port is to be used.
24 string `-' is used to indicate the global driver settings instead.
26 A '/dev/' is included if necessary.
28 The following commands are used for the global settings and should be
29 specified with the '-' device name.
31 .It Cm int_throttle Op Cm value
32 Configure the `aggregate interrupt throttle value'.
33 The maximum number of host adapter interrupts per second is determined by:
35 .Ar "controller CPU clock / (8 * int_throttle)"
37 The default value at boot time is 25000. The host adapter cpu clock is
38 25Mhz. This gives a maximum interrupt rate of about 125 interrupts per
41 Lowering this value will increase the rate in which the host adapter can
42 interrupt the operating system for attention.
44 .It Cm rxint_throttle Op Cm value
45 Configure the receiver interrupt throttle value.
46 The default value of 4 at boot time allows an interrupt rate of
49 Lowering this value will increase the rate in which the host adapter can
50 interrupt the operating system to empty the receiver fifos.
53 Return the number of ports under the control of the device driver.
56 The following commands are used for the individual ports and should be
57 specified with a device name from
61 Show the current incoming modem control signals.
63 Show the current "ccb" structure for the specified port.
65 much use outside of debugging the driver and determining why a port is
68 Show the current "tty" structure that the kernel has for the specified port.
69 This is not much use outside of debugging the driver.
72 .Bl -tag -width /dev/si_control -compact
73 .It Pa /dev/si_control
74 global driver control file for use by
77 terminal control ports
79 initial termios state devices, for use by
82 locked termios state devices, for use by
86 Generally self explanatory.....
95 is loosely based on a utility called
98 .An Andy Rutter Aq andy@acronym.co.uk
100 Specialix International do not support this device driver in any way.
102 .An Peter Wemm Aq peter@FreeBSD.org
104 Bound to be many... :-)