Merge tag 'iommu-updates-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:

 - Debugfs support for the Intel VT-d driver.

   When enabled, it now also exposes some of its internal data
   structures to user-space for debugging purposes.

 - ARM-SMMU driver now uses the generic deferred flushing and fast-path
   iova allocation code.

   This is expected to be a major performance improvement, as this
   allocation path scales a lot better.

 - Support for r8a7744 in the Renesas iommu driver

 - Couple of minor fixes and improvements all over the place

* tag 'iommu-updates-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (39 commits)
  iommu/arm-smmu-v3: Remove unnecessary wrapper function
  iommu/arm-smmu-v3: Add SPDX header
  iommu/amd: Add default branch in amd_iommu_capable()
  dt-bindings: iommu: ipmmu-vmsa: Add r8a7744 support
  iommu/amd: Move iommu_init_pci() to .init section
  iommu/arm-smmu: Support non-strict mode
  iommu/io-pgtable-arm-v7s: Add support for non-strict mode
  iommu/arm-smmu-v3: Add support for non-strict mode
  iommu/io-pgtable-arm: Add support for non-strict mode
  iommu: Add "iommu.strict" command line option
  iommu/dma: Add support for non-strict mode
  iommu/arm-smmu: Ensure that page-table updates are visible before TLBI
  iommu/arm-smmu-v3: Implement flush_iotlb_all hook
  iommu/arm-smmu-v3: Avoid back-to-back CMD_SYNC operations
  iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout
  iommu/io-pgtable-arm: Fix race handling in split_blk_unmap()
  iommu/arm-smmu-v3: Fix a couple of minor comment typos
  iommu: Fix a typo
  iommu: Remove .domain_{get,set}_windows
  iommu: Tidy up window attributes
  ...

1 files changed, 22 insertions, 3 deletions

diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index f7787e757244..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
 
@@ -132,9 +133,8 @@ static int of_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data)
 	struct of_phandle_args iommu_spec = { .args_count = 1 };
 	int err;
 
-	err = of_pci_map_rid(info->np, alias, "iommu-map",
-			     "iommu-map-mask", &iommu_spec.np,
-			     iommu_spec.args);
+	err = of_map_rid(info->np, alias, "iommu-map", "iommu-map-mask",
+			 &iommu_spec.np, iommu_spec.args);
 	if (err)
 		return err == -ENODEV ? NO_IOMMU : err;
 
@@ -143,6 +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)
 {
@@ -174,6 +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;