locking in a device driver
Dinesh Nair
dinesh at alphaque.com
Tue Nov 1 21:57:51 PST 2005
On 11/02/05 06:16 Julian Elischer said the following:
> also, why do you need a pseudo device AND a device? The device driver
> can do all the things you have
> suggested on its own.
this is so userland apps wont need to change when different devices are
used. the pseudo device is the front for a number of real device drivers
running different devices from a quad-span E1/T1 line card to 4-port
FXS/FXO line cards. each of these cards are different, but present the same
device interface to the userland app via the pseudo device driver.
--
Regards, /\_/\ "All dogs go to heaven."
dinesh at alphaque.com (0 0) http://www.alphaque.com/
+==========================----oOO--(_)--OOo----==========================+
| for a in past present future; do |
| for b in clients employers associates relatives neighbours pets; do |
| echo "The opinions here in no way reflect the opinions of my $a $b." |
| done; done |
+=========================================================================+
More information about the freebsd-hackers
mailing list