8 .Nd Specialix SI/XIO driver configuration and debugging
12 .Ar command Op Ar param ...
16 utility is used to configure and monitor the SI/XIO device driver.
20 utility operates on the specified
22 to indicate which port is to be used.
26 string `-' is used to indicate the global driver settings instead.
30 is included if necessary.
32 The following commands are used for the global settings and should be
33 specified with the '-' device name:
35 .It Cm int_throttle Op Cm value
36 Configure the `aggregate interrupt throttle value'.
37 The maximum number of host adapter interrupts per second is determined by:
39 .Ar "controller CPU clock / (8 * int_throttle)"
41 The default value at boot time is 25000.
42 The host adapter cpu clock is
44 This gives a maximum interrupt rate of about 125 interrupts per
47 Lowering this value will increase the rate in which the host adapter can
48 interrupt the operating system for attention.
50 .It Cm rxint_throttle Op Cm value
51 Configure the receiver interrupt throttle value.
52 The default value of 4 at boot time allows an interrupt rate of
55 Lowering this value will increase the rate in which the host adapter can
56 interrupt the operating system to empty the receiver fifos.
59 Return the number of ports under the control of the device driver.
62 The following commands are used for the individual ports and should be
63 specified with a device name from
67 Show the current incoming modem control signals.
69 Show the current "ccb" structure for the specified port.
71 much use outside of debugging the driver and determining why a port is
75 .Bl -tag -width /dev/si_control -compact
76 .It Pa /dev/si_control
77 global driver control file for use by
80 terminal control ports
82 initial termios state devices, for use by
85 locked termios state devices, for use by
89 Generally self explanatory.....
99 utility is loosely based on a utility called
102 .An Andy Rutter Aq andy@acronym.co.uk
104 Specialix International do not support this device driver in any way.
106 .An Peter Wemm Aq peter@FreeBSD.org