Clone driver

[Gary Schumacher]

I am new to LiS and am in the process of porting a clone driver from a
Solaris platform to
a PPC platform using Linux (2.4.20) and LiS (2.18). Are there some good
examples or
documentation on how to manage the major/minor numbers during
init/open/close/cleanup?
Any help would be appreciated - I have searched for a FAQ and and have
not been able to
see the mail list archives.

Thanks
Gary Schumacher



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[Brian F. G. Bidulock]

Gary,

I take it you are using the deprecated LiS 2.18.0: the one that comes
with no manual pages. You would be better to use streams-0.7a.4 and the
strcompat-0.9.2.2 package which provides some Solaris compatible DDI/DKI
functions. Linux Fast-STREAMS is much better documented than LiS.

For general qi_qopen procedure considerations (for clone drivers too),
see http://www.openss7.org/man2html?9+qi_qopen This is for Linux
Fast-STREAMS, but it is roughly the same for the deprecated LiS package.

For Solaris compatibilty functions present in the STREAMS Compatibility
Modules, see http://www.openss7.org/man2html?9+suncompat Of particular
interest might be functions like ddi_create_minor_node() which is here
http://www.openss7.org/man2html?9+ddi_create_minor_node

If you really must use LiS, use the LiS 2.18.2 release from OpenSS7 at
http://www.openss7.org/tarballs/LiS-2.18.2.tar.bz2 that comes with a
complete set of manual pages.

--brian

Post by Gary Schumacher
I am new to LiS and am in the process of porting a clone driver from a
Solaris platform to
a PPC platform using Linux (2.4.20) and LiS (2.18). Are there some
good examples or
documentation on how to manage the major/minor numbers during
init/open/close/cleanup?
Any help would be appreciated - I have searched for a FAQ and and have
not been able to
see the mail list archives.
Thanks
Gary Schumacher

[Steve Schefter]

Hi Gary.

Post by Gary Schumacher
I am new to LiS and am in the process of porting a clone driver from a
Solaris platform to
a PPC platform using Linux (2.4.20) and LiS (2.18). Are there some good
examples or
documentation on how to manage the major/minor numbers during
init/open/close/cleanup?

There are a number of sample drivers that come with LiS. Take a look
at drivers/str/linux/ip_to_dlpi.c for example. It deals with acquiring
a major number (lis_register_strdev() in init), getting a new clone
device in open and freeing the major numer in cleanup.

We too use LiS on a PPC (for one) platform. If you haven't already
come across it, see "PPC" and "ppc" references in config.mk in LiS'
top level.

Regards,
Steve

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