svn commit: r186878 - head/sys/dev/mpt

John Baldwin jhb at
Thu Jan 15 07:46:54 PST 2009

On Wednesday 07 January 2009 4:52:47 pm Marius Strobl wrote:
> Author: marius
> Date: Wed Jan  7 21:52:47 2009
> New Revision: 186878
> URL:
> Log:
>   Make the whole initiator mode part of mpt(4) endian-clean,
>   specifically SPI controllers now also work in big-endian
>   machines and some conversions relevant for FC and SAS
>   controllers as well as support for ILP32 machines which all
>   were omitted in previous attempts are now also implemented.
>   The IOCTL-interface is intentionally left (and where needed
>   actually changed) to be completely little-endian as otherwise
>   we would have to add conversion code for every possible
>   configuration page to mpt(4), which didn't seem the right
>   thing to do, neither did converting only half of the user-
>   interface to the native byte order.
>   This change was tested on amd64 (SAS+SPI), i386 (SAS) and
>   sparc64 (SAS+SPI). Due to lack of the necessary hardware
>   the target mode code is still left to be made endian-clean.
>   Reviewed by:	scottl
>   MFC after:	1 month

If you wish to test the mpt_user interface on a big-endian machine you may 
use //depot/jhb/raid/usr.sbin/mptutil/...

It is likely going to need a lot of sprinkled htole*() and letoh*() though.

John Baldwin

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