pccard — PC Card
bus driver
This driver is scheduled for removal prior to the release of
FreeBSD 13.0.
The pccard driver implements the PC Card
bus. The pccard driver supports all PC Card bridges
in the system.
The driver supports the following tunable parameters, which may be
added to /boot/loader.conf or set via the
sysctl(8) command:
hw.pccard.debug- Non-zero values cause more verbose information to be printed when a 16-bit
PC Card is inserted or removed.
hw.pccard.cis_debug- Non-zero value causes the CIS parsing of the 16-bit PC Card to be much
more verbose and include a complete CIS dump.
- /dev/pccard0.cis
- This exclusive-use device will report all the CIS chains present in a PC
Card, if a 16-bit PC Card is inserted in the slot. Only one user at a time
may access the CIS. The CIS is presented as the relevant byte stream from
the PC Card. For CIS tuples in Attribute Memory (the default), only the
even locations are presented (the ODD locations are undefined per the
standard). For CIS tuples in Common Memory, every byte is presented to the
user. Decoding of the CIS tuples is done via a userland program. All
tuples are presented to the user.