linux-kernel - Re: [PATCH 0/5] CAAM JR lifecycle

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Message-ID: <CAHQ1cqH5hstMwbO1vqOkZ3GVe-j5a+c3TX-yosq-TvuFFxPkHQ@mail.gmail.com>
Date:   Wed, 6 Nov 2019 07:19:20 -0800
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     Vakul Garg <vakul.garg@....com>
Cc:     "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        Chris Healy <cphealy@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Horia Geanta <horia.geanta@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Iuliana Prodan <iuliana.prodan@....com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/5] CAAM JR lifecycle

On Tue, Nov 5, 2019 at 11:27 PM Vakul Garg <vakul.garg@....com> wrote:
>
>
>
> > -----Original Message-----
> > From: linux-crypto-owner@...r.kernel.org <linux-crypto-
> > owner@...r.kernel.org> On Behalf Of Andrey Smirnov
> > Sent: Tuesday, November 5, 2019 8:44 PM
> > To: linux-crypto@...r.kernel.org
> > Cc: Andrey Smirnov <andrew.smirnov@...il.com>; Chris Healy
> > <cphealy@...il.com>; Lucas Stach <l.stach@...gutronix.de>; Horia Geanta
> > <horia.geanta@....com>; Herbert Xu <herbert@...dor.apana.org.au>;
> > Iuliana Prodan <iuliana.prodan@....com>; dl-linux-imx <linux-
> > imx@....com>; linux-kernel@...r.kernel.org
> > Subject: [PATCH 0/5] CAAM JR lifecycle
> >
> > Everyone:
> >
> > This series is a different approach to addressing the issues brought up in
> > [discussion]. This time the proposition is to get away from creating per-JR
> > platfrom device, move all of the underlying code into caam.ko and disable
> > manual binding/unbinding of the CAAM device via sysfs. Note that this series
> > is a rough cut intented to gauge if this approach could be acceptable for
> > upstreaming.
> >
> > Thanks,
> > Andrey Smirnov
> >
> > [discussion] lore.kernel.org/lkml/20190904023515.7107-13-
> > andrew.smirnov@...il.com
> >
> > Andrey Smirnov (5):
> >   crypto: caam - use static initialization
> >   crypto: caam - introduce caam_jr_cbk
> >   crypto: caam - convert JR API to use struct caam_drv_private_jr
> >   crypto: caam - do not create a platform devices for JRs
> >   crypto: caam - disable CAAM's bind/unbind attributes
> >
>
> To access caam jobrings from DPDK (user space drivers), we unbind job-ring's platform device from the kernel.
> What would be the alternate way to enable job ring drivers in user space?
>

Wouldn't either building your kernel with
CONFIG_CRYPTO_DEV_FSL_CAAM_JR=n (this series doesn't handle that right
currently due to being a rough cut) or disabling specific/all JRs via
DT accomplish the same goal?

Thanks,
Andrey Smirnov