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iommu: Remove iommu_register_instance interface 

And also move its remaining functionality to
iommu_device_register() and 'struct iommu_device'.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2017-02-02 12:19:12 +01:00
parent d2c302b6e8
commit d0f6f58326
8 changed files with 6 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/iommu/arm-smmu-v3.c
View File

@ -2702,8 +2702,6 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
ret = iommu_device_register(&smmu->iommu);
iommu_register_instance(dev->fwnode, &arm_smmu_ops);
#ifdef CONFIG_PCI
if (pci_bus_type.iommu_ops != &arm_smmu_ops) {
pci_request_acs();

1
drivers/iommu/arm-smmu.c
View File

@ -2121,7 +2121,6 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
return err;
}
iommu_register_instance(dev->fwnode, &arm_smmu_ops);
platform_set_drvdata(pdev, smmu);
arm_smmu_device_reset(smmu);

2
drivers/iommu/exynos-iommu.c
View File

@ -642,8 +642,6 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
of_iommu_set_ops(dev->of_node, &exynos_iommu_ops);
return 0;
}

37
drivers/iommu/iommu.c
View File

@ -1658,43 +1658,18 @@ out:
return ret;
}
struct iommu_instance {
struct list_head list;
struct fwnode_handle *fwnode;
const struct iommu_ops *ops;
};
static LIST_HEAD(iommu_instance_list);
static DEFINE_SPINLOCK(iommu_instance_lock);
void iommu_register_instance(struct fwnode_handle *fwnode,
const struct iommu_ops *ops)
{
struct iommu_instance *iommu = kzalloc(sizeof(*iommu), GFP_KERNEL);
if (WARN_ON(!iommu))
return;
of_node_get(to_of_node(fwnode));
INIT_LIST_HEAD(&iommu->list);
iommu->fwnode = fwnode;
iommu->ops = ops;
spin_lock(&iommu_instance_lock);
list_add_tail(&iommu->list, &iommu_instance_list);
spin_unlock(&iommu_instance_lock);
}
const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
{
struct iommu_instance *instance;
const struct iommu_ops *ops = NULL;
struct iommu_device *iommu;
spin_lock(&iommu_instance_lock);
list_for_each_entry(instance, &iommu_instance_list, list)
if (instance->fwnode == fwnode) {
ops = instance->ops;
spin_lock(&iommu_device_lock);
list_for_each_entry(iommu, &iommu_device_list, list)
if (iommu->fwnode == fwnode) {
ops = iommu->ops;
break;
}
spin_unlock(&iommu_instance_lock);
spin_unlock(&iommu_device_lock);
return ops;
}

2
drivers/iommu/msm_iommu.c
View File

@ -810,8 +810,6 @@ static int msm_iommu_probe(struct platform_device *pdev)
goto fail;
}
of_iommu_set_ops(pdev->dev.of_node, &msm_iommu_ops);
pr_info("device mapped at %p, irq %d with %d ctx banks\n",
iommu->base, iommu->irq, iommu->ncb);

1
drivers/iommu/mtk_iommu.c
View File

@ -681,7 +681,6 @@ static int mtk_iommu_init_fn(struct device_node *np)
return ret;
}
of_iommu_set_ops(np, &mtk_iommu_ops);
return 0;
}

7
include/linux/iommu.h
View File

@ -382,8 +382,6 @@ int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
const struct iommu_ops *ops);
void iommu_fwspec_free(struct device *dev);
int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids);
void iommu_register_instance(struct fwnode_handle *fwnode,
const struct iommu_ops *ops);
const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode);
#else /* CONFIG_IOMMU_API */
@ -634,11 +632,6 @@ static inline int iommu_fwspec_add_ids(struct device *dev, u32 *ids,
return -ENODEV;
}
static inline void iommu_register_instance(struct fwnode_handle *fwnode,
const struct iommu_ops *ops)
{
}
static inline
const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
{

6
include/linux/of_iommu.h
View File

@ -31,12 +31,6 @@ static inline const struct iommu_ops *of_iommu_configure(struct device *dev,
#endif /* CONFIG_OF_IOMMU */
static inline void of_iommu_set_ops(struct device_node *np,
const struct iommu_ops *ops)
{
iommu_register_instance(&np->fwnode, ops);
}
static inline const struct iommu_ops *of_iommu_get_ops(struct device_node *np)
{
return iommu_ops_from_fwnode(&np->fwnode);