diff options
| author | Nipun Gupta <nipun.gupta@nxp.com> | 2018-09-10 19:19:17 +0530 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-09-25 09:47:52 +0200 |
| commit | fa0656b40e0fb0135d7d229c8ab0261fe741af7b (patch) | |
| tree | d03e9ad0e0613ba8f4111c63c2953ea5be38ff31 /drivers/iommu | |
| parent | 2a6db719c92dbfe43c9eea7e4358ea2e51b5004e (diff) | |
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 <nipun.gupta@nxp.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/of_iommu.c | 20 |
1 files changed, 20 insertions, 0 deletions
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 <linux/of_iommu.h> #include <linux/of_pci.h> #include <linux/slab.h> +#include <linux/fsl/mc.h> #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; |