diff options
| author | Nicolin Chen <nicoleotsuka@gmail.com> | 2020-11-25 13:10:13 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-11-25 14:04:41 +0300 |
| commit | 541f29bb064345897843c02a9ac684fddefd87e5 (patch) | |
| tree | 03242f0dec586a42b09d727361ed51f4f60b0f3a /drivers/iommu | |
| parent | 25938c73cd7918169f80196e288fc3abb81053e5 (diff) | |
| download | linux-541f29bb064345897843c02a9ac684fddefd87e5.tar.xz | |
iommu/tegra-smmu: Add PCI support
This patch simply adds support for PCI devices.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201125101013.14953-6-nicoleotsuka@gmail.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/tegra-smmu.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index f45ed43cf8db..4a3f095a1c26 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -10,6 +10,7 @@ #include <linux/kernel.h> #include <linux/of.h> #include <linux/of_device.h> +#include <linux/pci.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -865,7 +866,11 @@ static struct iommu_group *tegra_smmu_device_group(struct device *dev) group->smmu = smmu; group->soc = soc; - group->group = iommu_group_alloc(); + if (dev_is_pci(dev)) + group->group = pci_device_group(dev); + else + group->group = generic_device_group(dev); + if (IS_ERR(group->group)) { devm_kfree(smmu->dev, group); mutex_unlock(&smmu->lock); @@ -1075,22 +1080,32 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev, iommu_device_set_fwnode(&smmu->iommu, dev->fwnode); err = iommu_device_register(&smmu->iommu); - if (err) { - iommu_device_sysfs_remove(&smmu->iommu); - return ERR_PTR(err); - } + if (err) + goto remove_sysfs; err = bus_set_iommu(&platform_bus_type, &tegra_smmu_ops); - if (err < 0) { - iommu_device_unregister(&smmu->iommu); - iommu_device_sysfs_remove(&smmu->iommu); - return ERR_PTR(err); - } + if (err < 0) + goto unregister; + +#ifdef CONFIG_PCI + err = bus_set_iommu(&pci_bus_type, &tegra_smmu_ops); + if (err < 0) + goto unset_platform_bus; +#endif if (IS_ENABLED(CONFIG_DEBUG_FS)) tegra_smmu_debugfs_init(smmu); return smmu; + +unset_platform_bus: __maybe_unused; + bus_set_iommu(&platform_bus_type, NULL); +unregister: + iommu_device_unregister(&smmu->iommu); +remove_sysfs: + iommu_device_sysfs_remove(&smmu->iommu); + + return ERR_PTR(err); } void tegra_smmu_remove(struct tegra_smmu *smmu) |