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SubjectRe: [PATCH v3 7/7] drm/msm/a5xx: Disable UCHE global filter
On Wed, Jan 13, 2021 at 07:33:39PM +0100, AngeloGioacchino Del Regno wrote:
> From: Konrad Dybcio <konrad.dybcio@somainline.org>
>
> Port over the command from downstream to prevent undefined
> behaviour.

Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>

> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
> ---
> drivers/gpu/drm/msm/adreno/a5xx.xml.h | 2 ++
> drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 3 +++
> 2 files changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a5xx.xml.h b/drivers/gpu/drm/msm/adreno/a5xx.xml.h
> index 346cc6ff3a36..7b9fcfe95c04 100644
> --- a/drivers/gpu/drm/msm/adreno/a5xx.xml.h
> +++ b/drivers/gpu/drm/msm/adreno/a5xx.xml.h
> @@ -2367,6 +2367,8 @@ static inline uint32_t A5XX_VSC_RESOLVE_CNTL_Y(uint32_t val)
>
> #define REG_A5XX_UCHE_ADDR_MODE_CNTL 0x00000e80
>
> +#define REG_A5XX_UCHE_MODE_CNTL 0x00000e81
> +
> #define REG_A5XX_UCHE_SVM_CNTL 0x00000e82
>
> #define REG_A5XX_UCHE_WRITE_THRU_BASE_LO 0x00000e87
> diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> index 23fc851756de..7e553d3efeb2 100644
> --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
> @@ -754,6 +754,9 @@ static int a5xx_hw_init(struct msm_gpu *gpu)
> adreno_is_a512(adreno_gpu))
> gpu_rmw(gpu, REG_A5XX_RB_DBG_ECO_CNTL, 0, (1 << 9));
>
> + /* Disable UCHE global filter as SP can invalidate/flush independently */
> + gpu_write(gpu, REG_A5XX_UCHE_MODE_CNTL, BIT(29));
> +
> /* Enable USE_RETENTION_FLOPS */
> gpu_write(gpu, REG_A5XX_CP_CHICKEN_DBG, 0x02000000);
>
> --
> 2.29.2
>

--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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