linux-kernel - Re: [PATCH v13 4/6] iommu/arm-smmu: add ACTLR data and support for SM8550

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Message-ID: <ueuhu5xfzp2rnuxzeqqd6cho476adidztgx7oq2tbiufauv6h4@obblpxvqwnno>
Date: Mon, 1 Jul 2024 21:34:07 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Bibek Kumar Patro <quic_bibekkum@...cinc.com>
Cc: robdclark@...il.com, will@...nel.org, robin.murphy@....com, 
	joro@...tes.org, jgg@...pe.ca, jsnitsel@...hat.com, robh@...nel.org, 
	krzysztof.kozlowski@...aro.org, quic_c_gdjako@...cinc.com, 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 v13 4/6] iommu/arm-smmu: add ACTLR data and support for
 SM8550

On Fri, Jun 28, 2024 at 07:34:33PM GMT, Bibek Kumar Patro wrote:
> Add ACTLR data table for SM8550 along with support for
> same including SM8550 specific implementation operations.
> 
> Signed-off-by: Bibek Kumar Patro <quic_bibekkum@...cinc.com>
> ---
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 89 ++++++++++++++++++++++
>  1 file changed, 89 insertions(+)
> 
> diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> index 77c9abffe07d..b4521471ffe9 100644
> --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> @@ -23,6 +23,85 @@
> 
>  #define CPRE			(1 << 1)
>  #define CMTLB			(1 << 0)
> +#define PREFETCH_SHIFT		8
> +#define PREFETCH_DEFAULT	0
> +#define PREFETCH_SHALLOW	(1 << PREFETCH_SHIFT)
> +#define PREFETCH_MODERATE	(2 << PREFETCH_SHIFT)
> +#define PREFETCH_DEEP		(3 << PREFETCH_SHIFT)
> +
> +static const struct actlr_config sm8550_apps_actlr_cfg[] = {
> +	{ 0x18a0, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x18e0, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x0800, 0x0020, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x1800, 0x00c0, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x1820, 0x0000, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x1860, 0x0000, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x0c01, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },

- Please keep the list sorted
- Please comment, which devices use these settings.

> +	{ 0x0c02, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c03, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c04, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c05, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c06, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c07, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c08, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c09, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c0c, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c0d, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c0e, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x0c0f, 0x0020, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1961, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1962, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1963, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1964, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1965, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1966, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1967, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1968, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1969, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x196c, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x196d, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x196e, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x196f, 0x0000, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c1, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c2, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c3, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c4, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c5, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c6, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c7, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c8, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19c9, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19cc, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19cd, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19ce, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x19cf, 0x0010, PREFETCH_DEEP | CPRE | CMTLB },
> +	{ 0x1c00, 0x0002, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1c01, 0x0000, PREFETCH_DEFAULT | CMTLB },
> +	{ 0x1920, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1923, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1924, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1940, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1941, 0x0004, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1943, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1944, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +	{ 0x1947, 0x0000, PREFETCH_SHALLOW | CPRE | CMTLB },
> +};
> +
> +static const struct actlr_config sm8550_gfx_actlr_cfg[] = {
> +	{ 0x0000, 0x03ff, PREFETCH_DEEP | CPRE | CMTLB },
> +};
> +
> +static const struct actlr_variant sm8550_actlr[] = {
> +	{
> +		.io_start = 0x15000000,
> +		.actlrcfg = sm8550_apps_actlr_cfg,
> +		.num_actlrcfg = ARRAY_SIZE(sm8550_apps_actlr_cfg)
> +	}, {
> +		.io_start = 0x03da0000,
> +		.actlrcfg = sm8550_gfx_actlr_cfg,
> +		.num_actlrcfg = ARRAY_SIZE(sm8550_gfx_actlr_cfg)
> +	},
> +};
> 
>  static struct qcom_smmu *to_qcom_smmu(struct arm_smmu_device *smmu)
>  {
> @@ -606,6 +685,15 @@ static const struct qcom_smmu_match_data sdm845_smmu_500_data = {
>  	/* Also no debug configuration. */
>  };
> 
> +
> +static const struct qcom_smmu_match_data sm8550_smmu_500_impl0_data = {
> +	.impl = &qcom_smmu_500_impl,
> +	.adreno_impl = &qcom_adreno_smmu_500_impl,
> +	.cfg = &qcom_smmu_impl0_cfg,
> +	.actlrvar = sm8550_actlr,
> +	.num_smmu = ARRAY_SIZE(sm8550_actlr),
> +};
> +
>  static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = {
>  	.impl = &qcom_smmu_500_impl,
>  	.adreno_impl = &qcom_adreno_smmu_500_impl,
> @@ -640,6 +728,7 @@ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = {
>  	{ .compatible = "qcom,sm8250-smmu-500", .data = &qcom_smmu_500_impl0_data },
>  	{ .compatible = "qcom,sm8350-smmu-500", .data = &qcom_smmu_500_impl0_data },
>  	{ .compatible = "qcom,sm8450-smmu-500", .data = &qcom_smmu_500_impl0_data },
> +	{ .compatible = "qcom,sm8550-smmu-500", .data = &sm8550_smmu_500_impl0_data },
>  	{ .compatible = "qcom,smmu-500", .data = &qcom_smmu_500_impl0_data },
>  	{ }
>  };
> --
> 2.34.1
> 

-- 
With best wishes
Dmitry