* [PATCH 09/11] iommu/mediatek: Make use of iommu_device_register interface
[not found] <1486639981-32368-1-git-send-email-joro@8bytes.org>
@ 2017-02-09 11:32 ` Joerg Roedel
2017-02-09 11:32 ` [PATCH 10/11] iommu/exynos: " Joerg Roedel
2017-02-09 11:33 ` [PATCH 11/11] iommu: Remove iommu_register_instance interface Joerg Roedel
2 siblings, 0 replies; 5+ messages in thread
From: Joerg Roedel @ 2017-02-09 11:32 UTC (permalink / raw)
To: linux-arm-kernel
From: Joerg Roedel <jroedel@suse.de>
Register individual Mediatek IOMMUs to the iommu core and
add sysfs entries.
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-mediatek at lists.infradead.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/mtk_iommu.c | 26 ++++++++++++++++++++++++++
drivers/iommu/mtk_iommu.h | 2 ++
2 files changed, 28 insertions(+)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 1479c76..d484fa6 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -360,11 +360,15 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
static int mtk_iommu_add_device(struct device *dev)
{
+ struct mtk_iommu_data *data;
struct iommu_group *group;
if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
return -ENODEV; /* Not a iommu client device */
+ data = dev->iommu_fwspec->iommu_priv;
+ iommu_device_link(&data->iommu, dev);
+
group = iommu_group_get_for_dev(dev);
if (IS_ERR(group))
return PTR_ERR(group);
@@ -375,9 +379,14 @@ static int mtk_iommu_add_device(struct device *dev)
static void mtk_iommu_remove_device(struct device *dev)
{
+ struct mtk_iommu_data *data;
+
if (!dev->iommu_fwspec || dev->iommu_fwspec->ops != &mtk_iommu_ops)
return;
+ data = dev->iommu_fwspec->iommu_priv;
+ iommu_device_unlink(&data->iommu, dev);
+
iommu_group_remove_device(dev);
iommu_fwspec_free(dev);
}
@@ -497,6 +506,7 @@ static int mtk_iommu_probe(struct platform_device *pdev)
struct mtk_iommu_data *data;
struct device *dev = &pdev->dev;
struct resource *res;
+ resource_size_t ioaddr;
struct component_match *match = NULL;
void *protect;
int i, larb_nr, ret;
@@ -519,6 +529,7 @@ static int mtk_iommu_probe(struct platform_device *pdev)
data->base = devm_ioremap_resource(dev, res);
if (IS_ERR(data->base))
return PTR_ERR(data->base);
+ ioaddr = res->start;
data->irq = platform_get_irq(pdev, 0);
if (data->irq < 0)
@@ -567,6 +578,18 @@ static int mtk_iommu_probe(struct platform_device *pdev)
if (ret)
return ret;
+ ret = iommu_device_sysfs_add(&data->iommu, dev, NULL,
+ "mtk-iommu.%pa", &ioaddr);
+ if (ret)
+ return ret;
+
+ iommu_device_set_ops(&data->iommu, &mtk_iommu_ops);
+ iommu_device_set_fwnode(&data->iommu, &pdev->dev.of_node->fwnode);
+
+ ret = iommu_device_register(&data->iommu);
+ if (ret)
+ return ret;
+
if (!iommu_present(&platform_bus_type))
bus_set_iommu(&platform_bus_type, &mtk_iommu_ops);
@@ -577,6 +600,9 @@ static int mtk_iommu_remove(struct platform_device *pdev)
{
struct mtk_iommu_data *data = platform_get_drvdata(pdev);
+ iommu_device_sysfs_remove(&data->iommu);
+ iommu_device_unregister(&data->iommu);
+
if (iommu_present(&platform_bus_type))
bus_set_iommu(&platform_bus_type, NULL);
diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h
index 50177f7..2a28ead 100644
--- a/drivers/iommu/mtk_iommu.h
+++ b/drivers/iommu/mtk_iommu.h
@@ -47,6 +47,8 @@ struct mtk_iommu_data {
struct iommu_group *m4u_group;
struct mtk_smi_iommu smi_imu; /* SMI larb iommu info */
bool enable_4GB;
+
+ struct iommu_device iommu;
};
static inline int compare_of(struct device *dev, void *data)
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH 10/11] iommu/exynos: Make use of iommu_device_register interface
[not found] <1486639981-32368-1-git-send-email-joro@8bytes.org>
2017-02-09 11:32 ` [PATCH 09/11] iommu/mediatek: Make use of iommu_device_register interface Joerg Roedel
@ 2017-02-09 11:32 ` Joerg Roedel
2017-02-10 13:46 ` Marek Szyprowski
2017-02-09 11:33 ` [PATCH 11/11] iommu: Remove iommu_register_instance interface Joerg Roedel
2 siblings, 1 reply; 5+ messages in thread
From: Joerg Roedel @ 2017-02-09 11:32 UTC (permalink / raw)
To: linux-arm-kernel
From: Joerg Roedel <jroedel@suse.de>
Register Exynos IOMMUs to the IOMMU core and make them
visible in sysfs. This patch does not add the links between
IOMMUs and translated devices yet.
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-samsung-soc at vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/exynos-iommu.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 57ba0d3..64325d8 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -276,6 +276,8 @@ struct sysmmu_drvdata {
struct list_head owner_node; /* node for owner controllers list */
phys_addr_t pgtable; /* assigned page table structure */
unsigned int version; /* our version */
+
+ struct iommu_device iommu; /* IOMMU core handle */
};
static struct exynos_iommu_domain *to_exynos_domain(struct iommu_domain *dom)
@@ -611,6 +613,18 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev)
data->sysmmu = dev;
spin_lock_init(&data->lock);
+ ret = iommu_device_sysfs_add(&data->iommu, &pdev->dev, NULL,
+ dev_name(data->sysmmu));
+ if (ret)
+ return ret;
+
+ iommu_device_set_ops(&data->iommu, &exynos_iommu_ops);
+ iommu_device_set_fwnode(&data->iommu, &dev->of_node->fwnode);
+
+ ret = iommu_device_register(&data->iommu);
+ if (ret)
+ return ret;
+
platform_set_drvdata(pdev, data);
__sysmmu_get_version(data);
--
1.9.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH 11/11] iommu: Remove iommu_register_instance interface
[not found] <1486639981-32368-1-git-send-email-joro@8bytes.org>
2017-02-09 11:32 ` [PATCH 09/11] iommu/mediatek: Make use of iommu_device_register interface Joerg Roedel
2017-02-09 11:32 ` [PATCH 10/11] iommu/exynos: " Joerg Roedel
@ 2017-02-09 11:33 ` Joerg Roedel
2 siblings, 0 replies; 5+ messages in thread
From: Joerg Roedel @ 2017-02-09 11:33 UTC (permalink / raw)
To: linux-arm-kernel
From: Joerg Roedel <jroedel@suse.de>
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 at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/arm-smmu-v3.c | 2 --
drivers/iommu/arm-smmu.c | 1 -
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 | 7 -------
include/linux/of_iommu.h | 6 ------
8 files changed, 6 insertions(+), 52 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 32133e2..5375137 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -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();
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index f4ce1e7..8fb4af2 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -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);
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 64325d8..778eccc 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -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;
}
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 30795cb..d044835 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 d484fa6..5d14cd1 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 626c935..9e82fc8 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -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)
{
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
^ permalink raw reply related [flat|nested] 5+ messages in thread