Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 09/10] iommu/exynos: Make use of iommu_device_register interface | Date | Mon, 6 Feb 2017 17:10:28 +0100 |
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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@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Signed-off-by: Joerg Roedel <jroedel@suse.de> --- drivers/iommu/exynos-iommu.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 57ba0d3..90f0f52 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) @@ -556,6 +558,7 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct sysmmu_drvdata *data; struct resource *res; + resource_size_t ioaddr; data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); if (!data) @@ -565,6 +568,7 @@ static int __init exynos_sysmmu_probe(struct platform_device *pdev) data->sfrbase = devm_ioremap_resource(dev, res); if (IS_ERR(data->sfrbase)) return PTR_ERR(data->sfrbase); + ioaddr = res->start; irq = platform_get_irq(pdev, 0); if (irq <= 0) { @@ -611,6 +615,18 @@ 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, + "sysmmu.%pa", &ioaddr); + if (ret) + return ret; + + data->iommu.ops = &exynos_iommu_ops; + data->iommu.fwnode = &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
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