memory_cb

MEMORY_CS(4)                                                      MEMORY_CS(4)



NAME
       memory_cb - CardBus memory driver

SYNOPSIS
       insmod memory_cb.o [pc_debug=n]

DESCRIPTION
       Memory_cb  gives  direct memory access to the address spaces of CardBus
       cards.  It provides character-mode devices for accessing a  card's  PCI
       configuration  space,  up  to  six mapped memory or IO regions, and its
       expansion ROM space.  When loaded, memory_cb will allocate a free major
       device  number.  For each card, it will report which address spaces are
       available, and their sizes.  Minor numbers have  the  form  'dddddsss',
       where  'ddddd' is the instance number and 'sss' is the memory space for
       that instance.  When memory_cb is bound to a card, it will  report  its
       major and minor device numbers to cardmgr(8).

       The  default  memory  card initialization script creates device special
       files for all eight card address spaces, though for a particular  card,
       some  of  these  may  be unavailable.  These devices have the following
       names:

       /dev/cbmem#s0
              The card's PCI configuration space.

       /dev/cbmem#s[1-6]
              The IO or memory spaces mapped by the card's  six  Base  Address
              Registers.

       /dev/cbmem#s7
              The card's expansion ROM space.

       The  character  special devices can be used to read and write arbitrary
       numbers of bytes to arbitrary locations.  The memory_cb driver  can  be
       bound to any card regardless of function.

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.

AUTHOR
       David Hinds - dahinds@users.sourceforge.net

SEE ALSO
       cardmgr(8), pcmcia(5), memory_cs(4).



pcmcia-cs                     2000/06/12 21:24:48                 MEMORY_CS(4)