linux-kernel - Re: [PATCH] drm/msm/adreno: Fix snapshot BINDLESS

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Date:   Fri, 14 Jul 2023 00:22:08 +0530
From:   Akhil P Oommen <quic_akhilpo@...cinc.com>
To:     Rob Clark <robdclark@...il.com>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <freedreno@...ts.freedesktop.org>,
        Rob Clark <robdclark@...omium.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/msm/adreno: Fix snapshot BINDLESS_DATA size

On Tue, Jul 11, 2023 at 10:54:07AM -0700, Rob Clark wrote:
> 
> From: Rob Clark <robdclark@...omium.org>
> 
> The incorrect size was causing "CP | AHB bus error" when snapshotting
> the GPU state on a6xx gen4 (a660 family).
> 
> Closes: https://gitlab.freedesktop.org/drm/msm/-/issues/26
> Signed-off-by: Rob Clark <robdclark@...omium.org>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
> index 790f55e24533..e788ed72eb0d 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
> @@ -206,7 +206,7 @@ static const struct a6xx_shader_block {
>  	SHADER(A6XX_SP_LB_3_DATA, 0x800),
>  	SHADER(A6XX_SP_LB_4_DATA, 0x800),
>  	SHADER(A6XX_SP_LB_5_DATA, 0x200),
> -	SHADER(A6XX_SP_CB_BINDLESS_DATA, 0x2000),
> +	SHADER(A6XX_SP_CB_BINDLESS_DATA, 0x800),
>  	SHADER(A6XX_SP_CB_LEGACY_DATA, 0x280),
>  	SHADER(A6XX_SP_UAV_DATA, 0x80),
>  	SHADER(A6XX_SP_INST_TAG, 0x80),
> -- 
> 2.41.0
> 
Reviewed-by: Akhil P Oommen <quic_akhilpo@...cinc.com>

-Akhil