"Garrett D'Amore" <[EMAIL PROTECTED]> wrote:
> If I had a device driver that, for reasons I won't go into here, needed
> to be STREAMS, could I then add a devmap(9E) entry point to additionally
> support mmap(2)? (The problem is that for my project, I may have to
> support two different semantics -- one which relies on STREAMS, the
> other which must support mmap(2).)
If you did ask this 12 years ago, it was easier for me to answer ;-)
1) It works/worked, for many ATM DLPI drivers to download the firmware
from userland.
2) You will get into problems if you have more than one instance on
your system:
2a) IIRC, You have to return a PTE early at driver attach time
before you know the instance number. Solution: return
a dummy number and send a correct number later on
2b) You may need to do some additional tricks if instance #0
is not present (See 2a).
The FORE ATM driver did it wrong and was unable to deal with a moved ATM
card untill you manually edited the file /etc/path_to_inst and removed the
old instance data.
Jörg
--
EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin
[EMAIL PROTECTED] (uni)
[EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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