Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 6 Jun 2023 21:09:52 +0530
From:   Akhil P Oommen <quic_akhilpo@quicinc.com>
To:     Konrad Dybcio <konrad.dybcio@linaro.org>
CC:     Rob Clark <robdclark@gmail.com>,
        Abhinav Kumar <quic_abhinavk@quicinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Sean Paul <sean@poorly.run>, David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Rob Clark <robdclark@chromium.org>,
        <devicetree@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <dri-devel@lists.freedesktop.org>,
        "Marijn Suijten" <marijn.suijten@somainline.org>,
        <freedreno@lists.freedesktop.org>
Subject: Re: [Freedreno] [PATCH v8 11/18] drm/msm/adreno: Disable
 has_cached_coherent in GMU wrapper configurations
Message-ID: <yx4pb2j2dn274ebhufxibti7zt6tozgd7c6qkaun6q7eonz3tw@roapp52oed75>
References: <20230223-topic-gmuwrapper-v8-0-69c68206609e@linaro.org>
 <20230223-topic-gmuwrapper-v8-11-69c68206609e@linaro.org>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <20230223-topic-gmuwrapper-v8-11-69c68206609e@linaro.org>
Precedence: bulk

On Mon, May 29, 2023 at 03:52:30PM +0200, Konrad Dybcio wrote:
> 
> A610 and A619_holi don't support the feature. Disable it to make the GPU stop
> crashing after almost each and every submission - the received data on
> the GPU end was simply incomplete in garbled, resulting in almost nothing
> being executed properly. Extend the disablement to adreno_has_gmu_wrapper,
> as none of the GMU wrapper Adrenos that don't support yet seem to feature it.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>

-Akhil
>  drivers/gpu/drm/msm/adreno/adreno_device.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
> index 8cff86e9d35c..b133755a56c4 100644
> --- a/drivers/gpu/drm/msm/adreno/adreno_device.c
> +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
> @@ -551,7 +551,6 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
>  		config.rev.minor, config.rev.patchid);
>  
>  	priv->is_a2xx = config.rev.core == 2;
> -	priv->has_cached_coherent = config.rev.core >= 6;
>  
>  	gpu = info->init(drm);
>  	if (IS_ERR(gpu)) {
> @@ -563,6 +562,10 @@ static int adreno_bind(struct device *dev, struct device *master, void *data)
>  	if (ret)
>  		return ret;
>  
> +	if (config.rev.core >= 6)
> +		if (!adreno_has_gmu_wrapper(to_adreno_gpu(gpu)))
> +			priv->has_cached_coherent = true;
> +
>  	return 0;
>  }
>  
> 
> -- 
> 2.40.1
>