SMCINIT(8)                                                 Linux IrDA                                                 SMCINIT(8)



NAME
       smcinit - initialize the SMSC IrDA controler on various laptops

SYNOPSIS
       smcinit [OPTIONS]

DESCRIPTION
       Toshiba  Satellite  1800,  Satellite  5100,  Tecra  9100  laptops  and  may be many other models are provided with a SMCS
       LPC47N227 SuperIO chip which is IrDA SIR/FIR capable.  The IrDA subsystem of the SuperIO chip is supported  by  the  smc-
       ircc  Linux  kernel  module.   Unfortunately the BIOS neither configurates the SuperIO chip IrDA subsystem (SIR port, FIR
       port, dma, irq, IrDA mode, power) nor sets the PCI-ISA bridge to decode any usable port.  Linux kernel is thus  prevented
       to  detect the second UART making impossible to use it in SIR mode. For the same reason, the FIR mode smc-ircc is able to
       detect the SuperIO chip but, once found the IrDA subsystem unconfigured, fails to install.

       While this problem will be fixed in Linux 2.6.x kernel series, the 2.4.x users are frustrated.  Daniele Peri, Rob  Miller
       and  Paul  Hampson mananged to build little utilities that initialize the LPC47N227 SuperIO allowing smc-ircc IrDA kernel
       driver to detect and use the SMSC chip.

       My sole work was to put these utilities as one package, easy to install and use.

OPTIONS
       -V, --version
           Show program version and exit

       -h, --help
           Show a little help on options and exit

       -v, --verbose
           Increase the details about actions performed

       -t, --tty=device
           If specified, the serial device will be unbound from the kernel stock serial driver.   It  is  there  to  replace  an
           external call to setserial(1) to unset the UART of the device.  There is no default value.

       -s, --sirio=IO
           Set the SIR (serial infrared) I/O port address to IO. Default value is 0x3f8.

       -f, --firio=IO
           Set the FIR (fast infrared) I/O port address to IO. Default value is 0x130.

       -i, --firirq=IRQ
           Set the FIR (fast infrared) IRQ line to IRQ. Default value is 3.

       -d, --firdma=DMA
           Set the FIR (fast infrared) DMA channel to DMA. Default value is 3.


CONFIGURATION
       When  system  startup  a script is run from /etc/init.d and which run appropriate SMC intialization utility. This is done
       before PCMCIA startup because on Tecra 9100 and other models the orinoco_cs wireless driver will  block  the  I/O  region
       used 47N227 SuperIO.

       The  only  configuration  file  is  /etc/sysconfig/smcinit  and the variable SMCCONFIG can be set to "1800" or "5100". By
       default "5100" value is used.

       1800
           for Toshiba Satellite 1800

       5100
           for Toshiba Satellite 5100 and Toshiba Tecra 9100

       The next step is to configure the kernel IrDA stack package to attach the smc-ircc driver.  This  is  Linux  distribution
       specific. The main thing is that the device should be set to "irda0". Run the following command:

       irattach irda0 -s

       Distribution specific configuration:

       SuSE
           Edit the /etc/sysconfig/irda and set IRDA_PORT=irda0

       RedHat
           Edit the /etc/sysconfig/irda and set DEVICE=irda0

NOTES
       The  smc-ircc driver is preloaded in kernel. I tested the package only on Tecra 9100 without any additional step, but for
       Toshiba Satellite 1800 Daniele Peri sugest to put the following line in your /etc/modules.conf (on one line):

       options smc-ircc ircc_dma=3 ircc_irq=7 ircc_cfg=0x2e \
               ircc_sir=0x2e8 ircc_fir=0x2f8

       After that run the command:

       prompt# depmod -a

       If the laptop enter suspend mode, then resume operation the smc-ircc driver will stop working. You need to stop IrDA ser-
       vice,  then  SMCINIT, start SMCINIT, and finally start IrDA service. Simply put, the kernel driver must be unloaded, then
       reloaded.

FILES
       /etc/sysconfig/smcinit
           Configuration file for SMCINIT startup script. It's shell script.

AUTHOR
       This document is made by Claudiu Costin <claudiucATkde.org> The utilities authors are Daniele Peri, Rob  Miller  and  Paul
       Hampson.   Thomas  Pinz  made  improvements to tosh-smcinit (the former tosh5100-smcinit) to expand the number of Toshiba
       Satellite models supported.

SEE ALSO
       smcinit(7),
       tosh1800-smcinit(8),
       irattach(1),
       irdadump(1),
       http://irda.sourceforge.net/smcinit/ the SMCINIT package home page.



0.4                                                        April 2004                                                 SMCINIT(8)