The core calls us when an mm is modified. Perform the required ATC invalidations. Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@xxxxxxx> --- drivers/iommu/arm-smmu-v3.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 7034b0bdcbdf..6cb69ace371b 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1735,6 +1735,15 @@ static int arm_smmu_atc_inv_master_all(struct arm_smmu_master_data *master, return arm_smmu_atc_inv_master(master, &cmd); } +static int arm_smmu_atc_inv_master_range(struct arm_smmu_master_data *master, + int ssid, unsigned long iova, size_t size) +{ + struct arm_smmu_cmdq_ent cmd; + + arm_smmu_atc_inv_to_cmd(ssid, iova, size, &cmd); + return arm_smmu_atc_inv_master(master, &cmd); +} + static size_t arm_smmu_atc_inv_domain(struct arm_smmu_domain *smmu_domain, int ssid, unsigned long iova, size_t size) @@ -2389,11 +2398,12 @@ static void arm_smmu_mm_detach(struct iommu_domain *domain, struct device *dev, struct arm_smmu_mm *smmu_mm = to_smmu_mm(io_mm); struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct iommu_pasid_table_ops *ops = smmu_domain->s1_cfg.ops; + struct arm_smmu_master_data *master = dev->iommu_fwspec->iommu_priv; if (detach_domain) ops->clear_entry(ops, io_mm->pasid, smmu_mm->cd); - /* TODO: Invalidate ATC. */ + arm_smmu_atc_inv_master_all(master, io_mm->pasid); /* TODO: Invalidate all mappings if last and not DVM. */ } @@ -2401,8 +2411,10 @@ static void arm_smmu_mm_invalidate(struct iommu_domain *domain, struct device *dev, struct io_mm *io_mm, unsigned long iova, size_t size) { + struct arm_smmu_master_data *master = dev->iommu_fwspec->iommu_priv; + + arm_smmu_atc_inv_master_range(master, io_mm->pasid, iova, size); /* - * TODO: Invalidate ATC. * TODO: Invalidate mapping if not DVM */ } -- 2.17.0