lkml.org 
[lkml]   [2018]   [Apr]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 3/6 v3] iommu: support iommu configuration for fsl-mc devices
    Date
    Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
    ---
    drivers/iommu/of_iommu.c | 20 ++++++++++++++++++++
    1 file changed, 20 insertions(+)

    diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
    index ea9ecef..3687882 100644
    --- a/drivers/iommu/of_iommu.c
    +++ b/drivers/iommu/of_iommu.c
    @@ -25,6 +25,7 @@
    #include <linux/of_iommu.h>
    #include <linux/of_pci.h>
    #include <linux/slab.h>
    +#include <linux/fsl/mc.h>

    #define NO_IOMMU 1

    @@ -160,6 +161,23 @@ 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)
    {
    @@ -191,6 +209,8 @@ 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;
    --
    1.9.1
    \
     
     \ /
      Last update: 2018-04-27 12:30    [W:4.963 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site