diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/mtk_iommu.c | 26 | ||||
| -rw-r--r-- | drivers/iommu/mtk_iommu.h | 2 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 1479c76ece9e..d484fa608db8 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 50177f738e4e..2a28eadeea0e 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) |