linux-kernel - Re: [PATCH v6 08/11] arm64: dts: qcom: sm8150: Add Crypto Engine support

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Message-ID: <CAH=2NtymHsMY3MOaSw9oy6h6PSA8WNi9xawmH2A86NWTMZLVNQ@mail.gmail.com>
Date:   Fri, 19 May 2023 16:03:34 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        agross@...nel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, andersson@...nel.org,
        bhupesh.linux@...il.com, krzysztof.kozlowski@...aro.org,
        robh+dt@...nel.org, vladimir.zapolskiy@...aro.org,
        rfoss@...nel.org, neil.armstrong@...aro.org, djakov@...nel.org
Subject: Re: [PATCH v6 08/11] arm64: dts: qcom: sm8150: Add Crypto Engine support

Hi Konrad,

Sorry for the late reply, but I wanted to look at the latest
downstream code before responding.

On Thu, 6 Apr 2023 at 19:28, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
> On 5.04.2023 09:28, Bhupesh Sharma wrote:
> > Add crypto engine (CE) and CE BAM related nodes and definitions to
> > 'sm8150.dtsi'.
> >
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> > ---
> >  arch/arm64/boot/dts/qcom/sm8150.dtsi | 22 ++++++++++++++++++++++
> >  1 file changed, 22 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
> > index 9491be4a6bf0..c104d0b12dc6 100644
> > --- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
> > @@ -2081,6 +2081,28 @@ ufs_mem_phy_lanes: phy@...7400 {
> >                       };
> >               };
> >
> > +             cryptobam: dma-controller@...4000 {
> > +                     compatible = "qcom,bam-v1.7.4", "qcom,bam-v1.7.0";
> > +                     reg = <0 0x01dc4000 0 0x24000>;
> > +                     interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
> > +                     #dma-cells = <1>;
> > +                     qcom,ee = <0>;
> > +                     qcom,controlled-remotely;
> > +                     iommus = <&apps_smmu 0x514 0x0011>,
> > +                              <&apps_smmu 0x516 0x0011>;
> > +             };
> > +
> > +             crypto: crypto@...a000 {
> > +                     compatible = "qcom,sm8150-qce", "qcom,qce";
> > +                     reg = <0 0x01dfa000 0 0x6000>;
> > +                     dmas = <&cryptobam 4>, <&cryptobam 5>;
> > +                     dma-names = "rx", "tx";
> > +                     iommus = <&apps_smmu 0x514 0x0011>,
> > +                              <&apps_smmu 0x516 0x0011>;
> Downstream uses these (sid, mask) combos:
>
> qcedev:
> 0x0506 0x0011
> 0x0516 0x0011 // equal to 0x506 0x11
>
> qcom_cedev_ns_cb:
> 0x512 0
> 0x518 0
> 0x519 0
> 0x51f 0
>
> Shouldn't we use them too?

Sure, but the following are the latest values used in the downstream
.dtsi, so I used them in the latest version and tested with the same
on sa8115p-adp and sm8150-mtp without any issues:

qcedev:
0x0502 0x0641
0x0504 0x0011

qcom_cedev_ns_cb:
0x0506 0x0011
0x0508 0x0011
0x0512 0x0000

I dropped:
0x0514 0x0011 // equal to 0x504 0x11
0x0516 0x0011 // equal to 0x506 0x11
0x0518 0x0011 // equal to 0x508 0x11

Thanks for pointing this out.

Regards,
Bhupesh