diff options
Diffstat (limited to 'sys/dev/pccard/card_if.m')
| -rw-r--r-- | sys/dev/pccard/card_if.m | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sys/dev/pccard/card_if.m b/sys/dev/pccard/card_if.m index 641e398..5e0bfd8 100644 --- a/sys/dev/pccard/card_if.m +++ b/sys/dev/pccard/card_if.m @@ -119,3 +119,43 @@ METHOD int deactivate_function { device_t dev; device_t child; } + +# +# Compatibility methods for OLDCARD drivers. We use these routines to make +# it possible to call the OLDCARD driver's probe routine in the context that +# it expects. For OLDCARD these are implemented as pass throughs to the +# device_{probe,attach} routines. For NEWCARD they are implemented such +# such that probe becomes strictly a matching routine and attach does both +# the old probe and old attach. +# +# compat devices should use the following: +# +# /* Device interface */ +# DEVMETHOD(device_probe), pccard_compat_probe), +# DEVMETHOD(device_attach), pccard_compat_attach), +# /* Card interface */ +# DEVMETHOD(card_compat_match, foo_match), /* newly written */ +# DEVMETHOD(card_compat_probe, foo_probe), /* old probe */ +# DEVMETHOD(card_compat_attach, foo_attach), /* old attach */ +# +# This will allow a single driver binary image to be used for both +# OLDCARD and NEWCARD. +# +# Drivers wishing to not retain OLDCARD compatibility needn't do this. +# +METHOD int compat_probe { + device_t dev; +} + +METHOD int compat_attach { + device_t dev; +} + +# +# Helper method for the above. When a compatibility driver is converted, +# one must write a match routine. This routine is unused on OLDCARD but +# is used as a discriminator for NEWCARD. +# +METHOD int compat_match { + device_t dev; +} |
