From: Gerd Hoffmann <kraxel@redhat.com>
To: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: Blue Swirl <blauwirbel@gmail.com>,
peter.maydell@linaro.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [RFC PATCH v1 2/4] bitops: Add UInt32StateInfo and helper functions
Date: Mon, 04 Mar 2013 08:30:27 +0100 [thread overview]
Message-ID: <51344D93.6020004@redhat.com> (raw)
In-Reply-To: <CAEgOgz4-teZR4EYR4BOMsLd3ApUgFLXu_aw1y84STsiBJrZjUw@mail.gmail.com>
Hi,
>>> + * @nw0: bits that cant be written with a 0 by the guest (sticky 1)
>>> + * @nw1: bits that cant be written with a 1 by the guest (sticky 0)
>>
>> Why these?
>>
>> reset=0 + ro=1 equals nw1=1
>> reset=1 + ro=1 equals nw0=1
>>
>
> Some bits in my devices can only be written one-way they are either
> "stuck on" once they are written, or only the hardware is allowed to
> write the other way.
Ah, ok. Makes sense. Can you make the description a bit more verbose
to clarify this?
cheers,
Gerd
next prev parent reply other threads:[~2013-03-04 7:30 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-03 6:13 [Qemu-devel] [RFC PATCH v1 0/4] Data Driven device registers & Zynq DEVCFG Peter Crosthwaite
2013-03-03 6:13 ` [Qemu-devel] [RFC PATCH v1 1/4] qemu-log: Allow checking of the current mask Peter Crosthwaite
2013-03-03 10:32 ` Peter Maydell
2013-03-03 6:13 ` [Qemu-devel] [RFC PATCH v1 2/4] bitops: Add UInt32StateInfo and helper functions Peter Crosthwaite
2013-03-03 9:01 ` Blue Swirl
2013-03-04 1:37 ` Peter Crosthwaite
2013-03-04 7:28 ` Gerd Hoffmann
2013-03-04 20:44 ` Blue Swirl
2013-03-04 9:44 ` Michael S. Tsirkin
2013-03-04 20:52 ` Blue Swirl
2013-03-05 13:34 ` Michael S. Tsirkin
2013-03-05 14:17 ` Gerd Hoffmann
2013-03-05 14:32 ` Michael S. Tsirkin
2013-03-07 2:00 ` Peter Crosthwaite
2013-03-07 2:26 ` Peter Maydell
2013-03-09 9:41 ` Blue Swirl
2013-03-04 6:55 ` Gerd Hoffmann
2013-03-04 7:20 ` Peter Crosthwaite
2013-03-04 7:30 ` Gerd Hoffmann [this message]
2013-03-03 6:13 ` [Qemu-devel] [RFC PATCH v1 3/4] xilinx_zynq: devcfg device model Peter Crosthwaite
2013-03-03 6:13 ` [Qemu-devel] [RFC PATCH v1 4/4] zynq: added devcfg to machine model Peter Crosthwaite
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