Re: [PATCH v16 5/5] iommu/arm-smmu: add ACTLR data and support for qcom_smmu_500

Bibek Kumar Patro
2024-10-29T14:15:40Z

On 10/29/2024 2:46 AM, Rob Clark wrote:
> On Tue, Oct 8, 2024 at 5:55 AM Bibek Kumar Patro
> <quic_bibekkum@quicinc.com> wrote:
>>
>> Add ACTLR data table for qcom_smmu_500 including
>> corresponding data entry and set prefetch value by
>> way of a list of compatible strings.
>>
>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>> Signed-off-by: Bibek Kumar Patro <quic_bibekkum@quicinc.com>
>> ---
>> drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 24 ++++++++++++++++++++++
>> 1 file changed, 24 insertions(+)
>>
>> diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
>> index 2d2c1e75632c..dd4fb883ebcd 100644
>> --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
>> +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
>> @@ -25,8 +25,31 @@
>>
>> #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)
>> #define GFX_ACTLR_PRR (1 << 5)
>>
>> +static const struct of_device_id qcom_smmu_actlr_client_of_match[] = {
>> + { .compatible = "qcom,adreno",
>> + .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
>> + { .compatible = "qcom,adreno-gmu",
>> + .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
>> + { .compatible = "qcom,adreno-smmu",
>> + .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
>> + { .compatible = "qcom,fastrpc",
>> + .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
>> + { .compatible = "qcom,sc7280-mdss",
>> + .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
>> + { .compatible = "qcom,sc7280-venus",
>> + .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
>> + { .compatible = "qcom,sm8550-mdss",
>> + .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
>> + { }
>> +};
>
> I guess by now there are some more entries to add
> ("qcom,x1e80100-mdss", for example), but I guess those could be
> followup patches
>
> Reviewed-by: Rob Clark <robdclark@gmail.com>
>

Thanks everyone for valuable inputs, reviews and ack.

regards,
Bibek

>> +
>> static struct qcom_smmu *to_qcom_smmu(struct arm_smmu_device *smmu)
>> {
>> return container_of(smmu, struct qcom_smmu, smmu);
>> @@ -640,6 +663,7 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = {
>> .impl = &qcom_smmu_500_impl,
>> .adreno_impl = &qcom_adreno_smmu_500_impl,
>> .cfg = &qcom_smmu_impl0_cfg,
>> + .client_match = qcom_smmu_actlr_client_of_match,
>> };
>>
>> /*
>> --
>> 2.34.1
>>