diff options
| author | Joerg Roedel <jroedel@suse.de> | 2017-08-09 17:41:52 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-08-17 16:31:34 +0200 |
| commit | 0b480e447006144ffcfaf178574b9a13344588a6 (patch) | |
| tree | 47df3de6dbdd4f0803307bbe25fb45d1cf9d3ea9 /drivers/iommu | |
| parent | fa94cf84af20d179e04eab429cfec9d91922111d (diff) | |
| download | linux-0b480e447006144ffcfaf178574b9a13344588a6.tar.bz2 | |
iommu/tegra: Add support for struct iommu_device
Add a struct iommu_device to each tegra-smmu and register it
with the iommu-core. Also link devices added to the driver
to their respective hardware iommus.
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/tegra-smmu.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index faa9c1e70482..2802e12e6a54 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -36,6 +36,8 @@ struct tegra_smmu { struct list_head list; struct dentry *debugfs; + + struct iommu_device iommu; /* IOMMU Core code handle */ }; struct tegra_smmu_as { @@ -720,6 +722,9 @@ static int tegra_smmu_add_device(struct device *dev) * first match. */ dev->archdata.iommu = smmu; + + iommu_device_link(&smmu->iommu, dev); + break; } @@ -737,6 +742,11 @@ static int tegra_smmu_add_device(struct device *dev) static void tegra_smmu_remove_device(struct device *dev) { + struct tegra_smmu *smmu = dev->archdata.iommu; + + if (smmu) + iommu_device_unlink(&smmu->iommu, dev); + dev->archdata.iommu = NULL; iommu_group_remove_device(dev); } @@ -943,6 +953,18 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev, if (err < 0) return ERR_PTR(err); + err = iommu_device_sysfs_add(&smmu->iommu, dev, NULL, dev_name(dev)); + if (err) + return ERR_PTR(err); + + iommu_device_set_ops(&smmu->iommu, &tegra_smmu_ops); + + err = iommu_device_register(&smmu->iommu); + if (err) { + iommu_device_sysfs_remove(&smmu->iommu); + return ERR_PTR(err); + } + if (IS_ENABLED(CONFIG_DEBUG_FS)) tegra_smmu_debugfs_init(smmu); @@ -951,6 +973,9 @@ struct tegra_smmu *tegra_smmu_probe(struct device *dev, void tegra_smmu_remove(struct tegra_smmu *smmu) { + iommu_device_unregister(&smmu->iommu); + iommu_device_sysfs_remove(&smmu->iommu); + if (IS_ENABLED(CONFIG_DEBUG_FS)) tegra_smmu_debugfs_exit(smmu); } |