linux-kernel - Re: [PATCH v5 00/22] Enable Qualcomm Crypto Engine on sm8150 & sm8250

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Message-ID: <20220211214941.f55q5yksittut3ep@amazon.com>
Date:   Fri, 11 Feb 2022 14:49:41 -0700
From:   Jordan Crouse <jorcrous@...zon.com>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-crypto@...r.kernel.org>,
        <bhupesh.linux@...il.com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <robh+dt@...nel.org>,
        <agross@...nel.org>, <herbert@...dor.apana.org.au>,
        <davem@...emloft.net>, <stephan@...hold.net>,
        Thara Gopinath <thara.gopinath@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: Re: [PATCH v5 00/22] Enable Qualcomm Crypto Engine on sm8150 & sm8250

On Wed, Nov 10, 2021 at 04:29:00PM +0530, Bhupesh Sharma wrote:
> Changes since v4:
> =================
> - v4 for sm8250 can be seen here: https://lore.kernel.org/linux-arm-msm/20211013105541.68045-1-bhupesh.sharma@linaro.org/
> - v1 for sm8150 qce enablement can be seen here: https://lore.kernel.org/linux-arm-msm/20211013165823.88123-1-bhupesh.sharma@linaro.org/
> - Merged the sm8150 and sm8250 enablement patches in the same patchset,
>   as per suggestions from Bjorn.
> - Dropped a couple of patches from v4, as these have been picked by
>   Bjorn already via his tree.
> - Addressed review comments from Vladimir, Thara and Rob.
> - Collect Reviewed-by from Rob and Thara on some of the patches from the
>   v4 patchset.
> 
> Changes since v3:
> =================
> - v3 can be seen here: https://lore.kernel.org/linux-arm-msm/20210519143700.27392-1-bhupesh.sharma@linaro.org/
> - Dropped a couple of patches from v3, on basis of the review comments:
>    ~ [PATCH 13/17] crypto: qce: core: Make clocks optional
>    ~ [PATCH 15/17] crypto: qce: Convert the device found dev_dbg() to dev_info()
> - Addressed review comments from Thara, Rob and Stephan Gerhold.
> - Collect Reviewed-by from Rob and Thara on some of the patches from the
>   v3 patchset.
> 
> Changes since v2:
> =================
> - v2 can be seen here: https://lore.kernel.org/dmaengine/20210505213731.538612-1-bhupesh.sharma@linaro.org/
> - Drop a couple of patches from v1, which tried to address the defered
>   probing of qce driver in case bam dma driver is not yet probed.
>   Replace it instead with a single (simpler) patch [PATCH 16/17].
> - Convert bam dma and qce crypto dt-bindings to YAML.
> - Addressed review comments from Thara, Bjorn, Vinod and Rob.
> 
> Changes since v1:
> =================
> - v1 can be seen here: https://lore.kernel.org/linux-arm-msm/20210310052503.3618486-1-bhupesh.sharma@linaro.org/ 
> - v1 did not work well as reported earlier by Dmitry, so v2 contains the following
>   changes/fixes:
>   ~ Enable the interconnect path b/w BAM DMA and main memory first
>     before trying to access the BAM DMA registers.
>   ~ Enable the interconnect path b/w qce crytpo and main memory first
>     before trying to access the qce crypto registers.
>   ~ Make sure to document the required and optional properties for both
>     BAM DMA and qce crypto drivers.
>   ~ Add a few debug related print messages in case the qce crypto driver
>     passes or fails to probe.
>   ~ Convert the qce crypto driver probe to a defered one in case the BAM DMA
>     or the interconnect driver(s) (needed on specific Qualcomm parts) are not
>     yet probed.
> 
> Qualcomm crypto engine is also available on sm8150 and sm8250 SoCs.
> The qce block supports hardware accelerated algorithms for encryption
> and authentication. It also provides support for aes, des, 3des
> encryption algorithms and sha1, sha256, hmac(sha1), hmac(sha256)
> authentication algorithms.
> 
> Tested the enabled crypto algorithms with cryptsetup test utilities
> on sm8150-mtp, sa8155p-adp, sm8250-mtp and RB5 boards (see [1]) and
> also with crypto self-tests, including the fuzz tests
>  (CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y).
> 
> [1]. https://linux.die.net/man/8/cryptsetup
> 
> Cc: Thara Gopinath <thara.gopinath@...aro.org>
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: Rob Herring <robh+dt@...nel.org>

Extremely random drive-by. Bjorn pointed this series at me today and
I verified that it works and works well on sm8250. I agree with the
cleanups suggested but otherwise a very enthusiastic:

Tested-by: Jordan Crouse <jorcrous@...zon.com>

One nitpick possibly for the documentation somewhere. When I tried this
on my own I was using the reg base from the downstream kernel which is
obviously wrong. Perhaps a line somewhere in the bindings about
how you calculate the base address may help future porting efforts.

Jordan