diff options
| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2020-05-20 17:22:02 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-05-27 14:35:41 +0200 |
| commit | 0b2527a654190a987d45e2cc9e5c6946eea11fc5 (patch) | |
| tree | 6f5a3274cc3b80b1bc5ffc0b72942b464d53ad0c | |
| parent | iommu/amd: Use pci_ats_supported() (diff) | |
| download | linux-0b2527a654190a987d45e2cc9e5c6946eea11fc5.tar.xz linux-0b2527a654190a987d45e2cc9e5c6946eea11fc5.zip | |
iommu/arm-smmu-v3: Use pci_ats_supported()
The new pci_ats_supported() function checks if a device supports ATS and
is allowed to use it.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20200520152201.3309416-4-jean-philippe@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 42e1ee7e5197..cb086924419f 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2652,26 +2652,20 @@ static void arm_smmu_install_ste_for_dev(struct arm_smmu_master *master) } } -#ifdef CONFIG_PCI_ATS static bool arm_smmu_ats_supported(struct arm_smmu_master *master) { - struct pci_dev *pdev; + struct device *dev = master->dev; struct arm_smmu_device *smmu = master->smmu; - struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(master->dev); + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); - if (!(smmu->features & ARM_SMMU_FEAT_ATS) || !dev_is_pci(master->dev) || - !(fwspec->flags & IOMMU_FWSPEC_PCI_RC_ATS) || pci_ats_disabled()) + if (!(smmu->features & ARM_SMMU_FEAT_ATS)) return false; - pdev = to_pci_dev(master->dev); - return !pdev->untrusted && pdev->ats_cap; -} -#else -static bool arm_smmu_ats_supported(struct arm_smmu_master *master) -{ - return false; + if (!(fwspec->flags & IOMMU_FWSPEC_PCI_RC_ATS)) + return false; + + return dev_is_pci(dev) && pci_ats_supported(to_pci_dev(dev)); } -#endif static void arm_smmu_enable_ats(struct arm_smmu_master *master) { |