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 service, 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  <claudiuc@kde.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.