diff options
| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2020-09-18 12:18:51 +0200 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-09-28 23:48:06 +0100 |
| commit | f534d98b9d27053279da015d0187a09e3a090ccd (patch) | |
| tree | be506114a7672fc76c0dee116bd2264613cbafe7 /drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | |
| parent | d744f9e6c222c8086376bc56c86e4380595350bd (diff) | |
iommu/arm-smmu-v3: Add SVA device feature
Implement the IOMMU device feature callbacks to support the SVA feature.
At the moment dev_has_feat() returns false since I/O Page Faults and BTM
aren't yet implemented.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20200918101852.582559-12-jean-philippe@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 454a935de445..d4b7f40ccb02 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -647,6 +647,8 @@ struct arm_smmu_master { u32 *sids; unsigned int num_sids; bool ats_enabled; + bool sva_enabled; + struct list_head bonds; unsigned int ssid_bits; }; @@ -688,10 +690,34 @@ bool arm_smmu_free_asid(struct arm_smmu_ctx_desc *cd); #ifdef CONFIG_ARM_SMMU_V3_SVA bool arm_smmu_sva_supported(struct arm_smmu_device *smmu); +bool arm_smmu_master_sva_supported(struct arm_smmu_master *master); +bool arm_smmu_master_sva_enabled(struct arm_smmu_master *master); +int arm_smmu_master_enable_sva(struct arm_smmu_master *master); +int arm_smmu_master_disable_sva(struct arm_smmu_master *master); #else /* CONFIG_ARM_SMMU_V3_SVA */ static inline bool arm_smmu_sva_supported(struct arm_smmu_device *smmu) { return false; } + +static inline bool arm_smmu_master_sva_supported(struct arm_smmu_master *master) +{ + return false; +} + +static inline bool arm_smmu_master_sva_enabled(struct arm_smmu_master *master) +{ + return false; +} + +static inline int arm_smmu_master_enable_sva(struct arm_smmu_master *master) +{ + return -ENODEV; +} + +static inline int arm_smmu_master_disable_sva(struct arm_smmu_master *master) +{ + return -ENODEV; +} #endif /* CONFIG_ARM_SMMU_V3_SVA */ #endif /* _ARM_SMMU_V3_H */ |