| Message ID | 20230511145908.597683-1-robdclark@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3,1/2] iommu/arm-smmu-qcom: Fix missing adreno_smmu's | expand |
On 11.05.2023 16:59, Rob Clark wrote: > From: Rob Clark <robdclark@chromium.org> > > When the special handling of qcom,adreno-smmu was moved into > qcom_smmu_create(), it was overlooked that we didn't have all the > required entries in qcom_smmu_impl_of_match. So we stopped getting > adreno_smmu_priv on sc7180, breaking per-process pgtables. > > Fixes: 30b912a03d91 ("iommu/arm-smmu-qcom: Move the qcom,adreno-smmu check into qcom_smmu_create") > Suggested-by: Lepton Wu <lepton@chromium.org> > Signed-off-by: Rob Clark <robdclark@chromium.org> > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > index d1b296b95c86..66e191773099 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { > /* > * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need > * special handling and can not be covered by the qcom,smmu-500 entry. > */ > static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { > { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, > { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, > + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, > { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, > { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, > @@ -540,12 +541,18 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) > /* Match platform for ACPI boot */ > if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) > return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); > } > #endif > > match = of_match_node(qcom_smmu_impl_of_match, np); > if (match) > return qcom_smmu_create(smmu, match->data); > > + /* If you hit this WARN_ON() you are missing an entry in the > + * qcom_smmu_impl_of_match[] table, and GPU per-process page- > + * tables will be broken. > + */ Nit: I think people generally do /* * but I'm not the maintainer Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Cc: <stable@vger.kernel.org> Konrad > + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); > + > return smmu; > }
On Thu, May 11, 2023 at 07:59:05AM -0700, Rob Clark wrote: > From: Rob Clark <robdclark@chromium.org> > > When the special handling of qcom,adreno-smmu was moved into > qcom_smmu_create(), it was overlooked that we didn't have all the > required entries in qcom_smmu_impl_of_match. So we stopped getting > adreno_smmu_priv on sc7180, breaking per-process pgtables. > > Fixes: 30b912a03d91 ("iommu/arm-smmu-qcom: Move the qcom,adreno-smmu check into qcom_smmu_create") > Suggested-by: Lepton Wu <lepton@chromium.org> > Signed-off-by: Rob Clark <robdclark@chromium.org> > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > index d1b296b95c86..66e191773099 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { > /* > * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need > * special handling and can not be covered by the qcom,smmu-500 entry. > */ > static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { > { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, > { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, > + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, > { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, > { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, > { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, > { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, > @@ -540,12 +541,18 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) > /* Match platform for ACPI boot */ > if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) > return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); > } > #endif > > match = of_match_node(qcom_smmu_impl_of_match, np); > if (match) > return qcom_smmu_create(smmu, match->data); > > + /* If you hit this WARN_ON() you are missing an entry in the > + * qcom_smmu_impl_of_match[] table, and GPU per-process page- > + * tables will be broken. > + */ > + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); Wouldn't it be better to print the information from the comment, rather than force the user to diagnose a WARN_ON() back to the source? Will
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index d1b296b95c86..66e191773099 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -496,20 +496,21 @@ static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = { /* * Do not add any more qcom,SOC-smmu-500 entries to this list, unless they need * special handling and can not be covered by the qcom,smmu-500 entry. */ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = { { .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data }, { .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data }, { .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data}, { .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sm6350-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data }, @@ -540,12 +541,18 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) /* Match platform for ACPI boot */ if (acpi_match_platform_list(qcom_acpi_platlist) >= 0) return qcom_smmu_create(smmu, &qcom_smmu_500_impl0_data); } #endif match = of_match_node(qcom_smmu_impl_of_match, np); if (match) return qcom_smmu_create(smmu, match->data); + /* If you hit this WARN_ON() you are missing an entry in the + * qcom_smmu_impl_of_match[] table, and GPU per-process page- + * tables will be broken. + */ + WARN_ON(of_device_is_compatible(np, "qcom,adreno-smmu")); + return smmu; }