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RedHat 9 (Linux i386) - man page for dummy_cs (redhat section 4)

DUMMY_CS(4)			     Kernel Interfaces Manual			      DUMMY_CS(4)

NAME
       dummy_cs - PCMCIA dummy device driver

SYNOPSIS
       insmod dummy_cs.o [pc_debug=n] [free_ports=n] [irq_list=i,j,...]

DESCRIPTION
       The  dummy_cs  module has two purposes.	It is intended as a demonstration of how to write
       the PCMCIA interface code for a client driver, and the source code is  heavily  commented.
       It  is  also written to function as a sort of generic ``point enabler'': when bound to any
       PCMCIA IO card, it will read the card's Configuration Information Structure, and configure
       the card appropriately.	The configuration includes setting up IO and memory windows, con-
       figuring the card for interrupts, and initializing the card's PCMCIA configuration  regis-
       ters.

       It  turns  out  that many cards report incomplete or inaccurate configuration information,
       due to vendor carelessness and the complexity of the data format.   A  vendor  driver  can
       generally  take for granted many configuration details, so there is not much incentive for
       vendors to ensure that the on-card information is complete.  Thus, the dummy_cs module  is
       limited by its generality: since it makes no assumptions about card types, it is forced to
       rely on the card information, for better or worse.

PARAMETERS
       pc_debug=n
	      Selects the PCMCIA debugging level.  This parameter is only available if the module
	      is compiled with debugging enabled.  A non-zero value enables debugging.

       free_ports=n
	      A  flag  indicating if the IO ports allocated for the card should be freed from the
	      kernel resource maps.  This is useful if the dummy driver is being used to  config-
	      ure  a  card  in	preparation  for  loading  a specific PCMCIA-unaware driver.  The
	      default is 0 (false).

       irq_list=i,j,...
	      Specifies the set of interrupts that may be allocated by this driver.

AUTHOR
       David Hinds - dahinds@users.sourceforge.net

SEE ALSO
       cardmgr(8), pcmcia(5).

pcmcia-cs			       2000/06/12 21:24:47			      DUMMY_CS(4)


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