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 setse-
	   rial(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)