From fa0656b40e0fb0135d7d229c8ab0261fe741af7b Mon Sep 17 00:00:00 2001 From: Nipun Gupta Date: Mon, 10 Sep 2018 19:19:17 +0530 Subject: iommu/of: support iommu configuration for fsl-mc devices With of_pci_map_rid available for all the busses, use the function for configuration of devices on fsl-mc bus Signed-off-by: Nipun Gupta Reviewed-by: Robin Murphy Signed-off-by: Joerg Roedel --- drivers/iommu/of_iommu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/iommu/of_iommu.c') diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index c13eecac0e8a..c5dd63072529 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -24,6 +24,7 @@ #include #include #include +#include #define NO_IOMMU 1 @@ -142,6 +143,23 @@ static int of_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) return err; } +static int of_fsl_mc_iommu_init(struct fsl_mc_device *mc_dev, + struct device_node *master_np) +{ + struct of_phandle_args iommu_spec = { .args_count = 1 }; + int err; + + err = of_map_rid(master_np, mc_dev->icid, "iommu-map", + "iommu-map-mask", &iommu_spec.np, + iommu_spec.args); + if (err) + return err == -ENODEV ? NO_IOMMU : err; + + err = of_iommu_xlate(&mc_dev->dev, &iommu_spec); + of_node_put(iommu_spec.np); + return err; +} + const struct iommu_ops *of_iommu_configure(struct device *dev, struct device_node *master_np) { @@ -173,6 +191,8 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, err = pci_for_each_dma_alias(to_pci_dev(dev), of_pci_iommu_init, &info); + } else if (dev_is_fsl_mc(dev)) { + err = of_fsl_mc_iommu_init(to_fsl_mc_device(dev), master_np); } else { struct of_phandle_args iommu_spec; int idx = 0; -- cgit v1.2.3