From: Dan Williams <dan.j.williams@intel.com>
To: Anup Patel <anup.patel@broadcom.com>
Cc: Vinod Koul <vinod.koul@intel.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
Jassi Brar <jassisinghbrar@gmail.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Jon Mason <jonmason@broadcom.com>,
Rob Rice <rob.rice@broadcom.com>,
BCM Kernel Feedback <bcm-kernel-feedback-list@broadcom.com>,
"dmaengine@vger.kernel.org" <dmaengine@vger.kernel.org>,
Device Tree <devicetree@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-crypto@vger.kernel.org,
linux-raid <linux-raid@vger.kernel.org>
Subject: Re: [PATCH v2 2/5] async_tx: Handle DMA devices having support for fewer PQ coefficients
Date: Tue, 7 Feb 2017 00:27:23 -0800 [thread overview]
Message-ID: <CAPcyv4gbV1yf52JrejW+Dn3wOPn7Er+8HWdu2qsW0+Qm+cRr9g@mail.gmail.com> (raw)
In-Reply-To: <1486455406-11202-3-git-send-email-anup.patel@broadcom.com>
On Tue, Feb 7, 2017 at 12:16 AM, Anup Patel <anup.patel@broadcom.com> wrote:
> The DMAENGINE framework assumes that if PQ offload is supported by a
> DMA device then all 256 PQ coefficients are supported. This assumption
> does not hold anymore because we now have BCM-SBA-RAID offload engine
> which supports PQ offload with limited number of PQ coefficients.
>
> This patch extends async_tx APIs to handle DMA devices with support
> for fewer PQ coefficients.
>
> Signed-off-by: Anup Patel <anup.patel@broadcom.com>
> Reviewed-by: Scott Branden <scott.branden@broadcom.com>
I don't like this approach. Define an interface for md to query the
offload engine once at the beginning of time. We should not be adding
any new extensions to async_tx.
next prev parent reply other threads:[~2017-02-07 8:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-07 8:16 [PATCH v2 0/5] Broadcom SBA RAID support Anup Patel
2017-02-07 8:16 ` [PATCH v2 1/5] lib/raid6: Add log-of-2 table for RAID6 HW requiring disk position Anup Patel
[not found] ` <1486455406-11202-1-git-send-email-anup.patel-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2017-02-07 8:16 ` [PATCH v2 2/5] async_tx: Handle DMA devices having support for fewer PQ coefficients Anup Patel
2017-02-07 8:27 ` Dan Williams [this message]
2017-02-07 9:02 ` Anup Patel
2017-02-07 16:42 ` Vinod Koul
2017-02-08 6:37 ` Anup Patel
2017-02-07 18:16 ` Dan Williams
2017-02-08 8:57 ` Anup Patel
2017-02-08 16:24 ` Dan Williams
[not found] ` <CAPcyv4iFJXxvJFrUs2jtwP9GX5NcJ8LiEDHeZ5b1fwjCAToe5w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-02-09 9:29 ` Anup Patel
2017-02-09 16:44 ` Dan Williams
2017-02-10 3:24 ` Anup Patel
2017-02-07 8:16 ` [PATCH v2 3/5] async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome() Anup Patel
2017-02-07 8:16 ` [PATCH v2 4/5] dmaengine: Add Broadcom SBA RAID driver Anup Patel
2017-02-07 8:16 ` [PATCH v2 5/5] dt-bindings: Add DT bindings document for " Anup Patel
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