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.

0.4                                                April 2004                                         SMCINIT(8)