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iommu/rockchip: Make use of 'struct iommu_device' 

Register hardware IOMMUs seperatly with the iommu-core code
and add a sysfs representation of the iommu topology.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2017-03-31 16:26:03 +02:00
parent c02ed2e75e
commit c9d9f2394c
1 changed files with 28 additions and 2 deletions
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30
drivers/iommu/rockchip-iommu.c
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@ -90,6 +90,7 @@ struct rk_iommu {
void __iomem **bases;
int num_mmu;
int irq;
struct iommu_device iommu;
struct list_head node; /* entry in rk_iommu_domain.iommus */
struct iommu_domain *domain; /* domain to which iommu is attached */
};
@ -1032,6 +1033,7 @@ static int rk_iommu_group_set_iommudata(struct iommu_group *group,
static int rk_iommu_add_device(struct device *dev)
{
struct iommu_group *group;
struct rk_iommu *iommu;
int ret;
if (!rk_iommu_is_dev_iommu_master(dev))
@ -1054,6 +1056,10 @@ static int rk_iommu_add_device(struct device *dev)
if (ret)
goto err_remove_device;
iommu = rk_iommu_from_dev(dev);
if (iommu)
iommu_device_link(&iommu->iommu, dev);
iommu_group_put(group);
return 0;
@ -1067,9 +1073,15 @@ err_put_group:
static void rk_iommu_remove_device(struct device *dev)
{
struct rk_iommu *iommu;
if (!rk_iommu_is_dev_iommu_master(dev))
return;
iommu = rk_iommu_from_dev(dev);
if (iommu)
iommu_device_unlink(&iommu->iommu, dev);
iommu_group_remove_device(dev);
}
@ -1117,7 +1129,7 @@ static int rk_iommu_probe(struct platform_device *pdev)
struct rk_iommu *iommu;
struct resource *res;
int num_res = pdev->num_resources;
int i;
int err, i;
iommu = devm_kzalloc(dev, sizeof(*iommu), GFP_KERNEL);
if (!iommu)
@ -1150,11 +1162,25 @@ static int rk_iommu_probe(struct platform_device *pdev)
return -ENXIO;
}
return 0;
err = iommu_device_sysfs_add(&iommu->iommu, dev, NULL, dev_name(dev));
if (err)
return err;
iommu_device_set_ops(&iommu->iommu, &rk_iommu_ops);
err = iommu_device_register(&iommu->iommu);
return err;
}
static int rk_iommu_remove(struct platform_device *pdev)
{
struct rk_iommu *iommu = platform_get_drvdata(pdev);
if (iommu) {
iommu_device_sysfs_remove(&iommu->iommu);
iommu_device_unregister(&iommu->iommu);
}
return 0;
}