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Subject: Re: [patch] axe RF_TIMESHARE?
From: Adrian Chadd <adrian@freebsd.org>
To: Don Lewis <truckman@freebsd.org>
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On 6 July 2014 17:47, Don Lewis <truckman@freebsd.org> wrote:
> On  6 Jul, Adrian Chadd wrote:
>> Hi,
>>
>> What's it supposed to be used for?
>
> My understanding it that it is supposed to be used to allow two more
> devices to claim the same resource, such as an I/O port range, but only
> one device can be active at a time.

Interesting. I wonder what kinds of things would want to do this.

There's a few interesting things like implementing the spibus using
this instead of the current way of calling a bus lock method before
doing any bus IO.


-a