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       smcinit - initialize the SMSC IrDA controler on various laptops


       smcinit [OPTIONS]


       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

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


       -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

       -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.


       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

           for Toshiba Satellite 1800

           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

       irattach irda0 -s

       Distribution specific configuration:

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

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


       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.


           Configuration file for SMCINIT startup script. It’s shell script.


       This   document  is  made  by  Claudiu  Costin  <>  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


       irdadump(1), the SMCINIT package home page.