pcmcia(4) - NetBSD Manual Pages

PCMCIA(4)                 NetBSD Programmer's Manual                 PCMCIA(4)


NAME

     pcmcia - introduction to PCMCIA (PC Card) support


SYNOPSIS

     pcic0   at isa? port 0x3e0 iomem 0xd0000 iosiz 0x4000
     pcic1   at isa? port 0x3e2 iomem 0xd4000 iosiz 0x4000
     pcmcia* at pcic? controller ? socket ?
     XX*     at pcmcia? function ?


INTRODUCTION

     NetBSD provides machine-independent bus support and drivers for PCMCIA
     (PC Card, Card Bus) devices.


SUPPORTED DEVICES

     NetBSD includes the following machine-independent PCMCIA drivers, sorted
     by function and driver name:

   Serial interfaces and modems
           com      8250/16450/16550-compatible PCMCIA serial cards and
                    modems.

   Network interfaces
           ep       3com 3c589 Etherlink-III Ethernet card.
           mbe      Ethernet card based on the Fujitsu MB86960A/MB86965A
                    chipset.
           ne       NE2000 compatible cards.
           sm       Megahertz Ethernet card.
           wi       Lucent WaveLan/IEEE 802.11 controller.

   SCSI controllers
           aic      Adaptec APA-1460 SCSI controller card.

   IDE controllers
           wdc      Digital Hinote Ultra Mobile Media Adapter

     The supported PCMCIA controllers are those that are i82365 compatible.


SEE ALSO

     intro(4), options(4), aic(4), com(4), ep(4), isa(4), ne(4), sm(4), wi(4)


HISTORY

     The pcmcia driver appeared in NetBSD 1.3.


BUGS

   IO space conflicts
     NetBSD probes the pcmcia IO bus width and uses that information to decide
     where to map PCMCIA IO space. For 10-bit wide cards, 0x300-0x3ff is used,
     and this is satisfactory. For 12-bit wide cards, however, it would nice
     to use 0x400-0xfff, however this causes some problems for some specific
     PCMCIA devices, as well as some specific laptops; consequently,
     0x300-0x3ff is used.

     Unfortunately, the choice of 0x300-0x3ff causes problems as well.  In
     particular, a number of video devices are mapped in that range, and may
     conflict. In the event that pcmcia devices are mapped in 0x300 and appear
     to be nonfunctional, remapping to 0x400-0xfff may be appropriate; consult
     options PCIC_ISA_ALLOC_IOBASE and
     options PCIC_ISA_ALLOC_IOSIZE in options(4).  Example:

           # Avoid pcmcia bus space conflicts with the default io space
           # allocation on 12-bit wide busses (base 0x300 size 0xff).
           options PCIC_ISA_ALLOC_IOBASE=0x400
           options PCIC_ISA_ALLOC_IOSIZE=0xbff

NetBSD 1.4                      April 13, 2000                               1