Skip site navigation (1)Skip section navigation (2)
Date:      Fri, 08 Aug 2003 09:44:08 +0200
From:      "Poul-Henning Kamp" <phk@phk.freebsd.dk>
To:        John Birrell <jb@cimlogic.com.au>
Cc:        ticso@cicely.de
Subject:   Re: How to get a device_t 
Message-ID:  <6421.1060328648@critter.freebsd.dk>
In-Reply-To: Your message of "Fri, 08 Aug 2003 08:36:17 %2B1000." <20030808083617.E7321@freebsd1.cimlogic.com.au> 

next in thread | previous in thread | raw e-mail | index | archive | help
In message <20030808083617.E7321@freebsd1.cimlogic.com.au>, John Birrell writes
:

>I'm not convinced that any hacking is required other than passing the
>device_t parent to nexus_pcib_is_host_bridge (in STABLE) as Bernd says.
>I traced the boot on my system and the MMCR is initialised early (when
>the Timecounter "ELAN" output occurs). Immediately following that
>initialisation, 'pcib' is added as a child of 'nexus'. I don't see why
>'mmcr' couldn't be added as a child of 'nexus' too. At this point,
>nexus isn't walking through it's children so there shouldn't be a problem.
>Then the ELAN specific devices (like GPIO and flash) can attach to 'mmcr'.
>
>This seems straight forward. Maybe I'm missing something. 8-)

That's my take too.  And MMCR belongs on nexus not on legacy from an
architectural point of view.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?6421.1060328648>