[PATCH 10/10] iommu: Remove iommu_register_instance interface

Joerg Roedel
2017-02-03T15:19:09Z

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>
---
drivers/iommu/arm-smmu-v3.c | 3 +--
drivers/iommu/arm-smmu.c | 4 ++--
drivers/iommu/exynos-iommu.c | 2 --
drivers/iommu/iommu.c | 37 ++++++-------------------------------
drivers/iommu/msm_iommu.c | 2 --
drivers/iommu/mtk_iommu.c | 1 -
include/linux/iommu.h | 8 +-------
include/linux/of_iommu.h | 6 ------
8 files changed, 10 insertions(+), 53 deletions(-)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 37094b5..3b00a2e 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2698,10 +2698,9 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
return ret;

smmu->iommu.ops = &arm_smmu_ops;
+ smmu->iommu.fwnode = dev->fwnode;
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();
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 827e778..dbbd2f2 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -2112,7 +2112,8 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
return err;
}

- smmu->iommu.ops = &arm_smmu_ops;
+ smmu->iommu.ops = &arm_smmu_ops;
+ smmu->iommu.fwnode = dev->fwnode;

err = iommu_device_register(&smmu->iommu);
if (err) {
@@ -2120,7 +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);

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 90f0f52..839f6c1 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -644,8 +644,6 @@ 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;
}

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 21061da..a7e14b4 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1647,43 +1647,18 @@ int iommu_request_dm_for_dev(struct device *dev)
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;
}

diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
index 38d19f9..b89b47e 100644
--- a/drivers/iommu/msm_iommu.c
+++ b/drivers/iommu/msm_iommu.c
@@ -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);

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 9fb7258..f0612aa 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -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;
}

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index e53452f..3fac95e 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -214,6 +214,7 @@ struct iommu_ops {
struct iommu_device {
struct list_head list;
const struct iommu_ops *ops;
+ struct fwnode_handle *fwnode;
struct device dev;
};

@@ -369,8 +370,6 @@ 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 */
@@ -601,11 +600,6 @@ 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)
{
diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h
index 66fcbc9..fc4add3 100644
--- a/include/linux/of_iommu.h
+++ b/include/linux/of_iommu.h
@@ -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);
--
1.9.1