Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0b480e44 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

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: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent fa94cf84

drivers/iommu/tegra-smmu.c

+25 −0
Original line number Diff line number Diff line
@@ -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);

}