linux-kernel - Re: [PATCH v14 5/6] iommu/arm-smmu: add ACTLR data and support for SC7280

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Message-ID: <20240823155918.GD525@willie-the-truck>
Date: Fri, 23 Aug 2024 16:59:18 +0100
From: Will Deacon <will@...nel.org>
To: Bibek Kumar Patro <quic_bibekkum@...cinc.com>
Cc: robdclark@...il.com, robin.murphy@....com, joro@...tes.org,
	jgg@...pe.ca, jsnitsel@...hat.com, robh@...nel.org,
	krzysztof.kozlowski@...aro.org, quic_c_gdjako@...cinc.com,
	dmitry.baryshkov@...aro.org, konrad.dybcio@...aro.org,
	iommu@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v14 5/6] iommu/arm-smmu: add ACTLR data and support for
 SC7280

On Fri, Aug 16, 2024 at 11:12:58PM +0530, Bibek Kumar Patro wrote:
> Add ACTLR data table for SC7280 along with support for
> same including SC7280 specific implementation operations.
> 
> Signed-off-by: Bibek Kumar Patro <quic_bibekkum@...cinc.com>
> ---
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 58 +++++++++++++++++++++-
>  1 file changed, 57 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> index dc143b250704..a776c7906c76 100644
> --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> @@ -31,6 +31,55 @@
>  #define PREFETCH_MODERATE	(2 << PREFETCH_SHIFT)
>  #define PREFETCH_DEEP		(3 << PREFETCH_SHIFT)
> 
> +static const struct actlr_config sc7280_apps_actlr_cfg[] = {
> +	{ 0x0800, 0x04e0, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x0900, 0x0402, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x0901, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x0d01, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1181, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1182, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1183, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1184, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1185, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1186, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1187, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1188, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1189, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x118b, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x118c, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x118d, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x118e, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x118f, 0x0420, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x2000, 0x0020, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x2040, 0x0000, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x2062, 0x0000, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x2080, 0x0020, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x20c0, 0x0020, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x2100, 0x0020, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x2140, 0x0000, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x2180, 0x0020, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x2181, 0x0004, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x2183, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x2184, 0x0020, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x2187, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +};
> +
> +static const struct actlr_config sc7280_gfx_actlr_cfg[] = {
> +	{ 0x0000, 0x07ff, PREFETCH_DEEP | CPRE | CMTLB },
> +};

It's Will "stuck record" Deacon here again to say that I don't think
this data belongs in the driver.

Have a great weekend!

Will