[RFC,10/13] iommu/virtio: Update IORT fwnode

Message ID 20191122105000.800410-11-jean-philippe@linaro.org
State New
Headers show
Series
  • virtio-iommu on non-devicetree platforms
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Commit Message

Jean-Philippe Brucker Nov. 22, 2019, 10:49 a.m.
When the virtio-iommu uses the PCI transport and the topology is
described with IORT, register the PCI fwnode with IORT.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>

---
 drivers/iommu/virtio-iommu.c | 5 +++++
 1 file changed, 5 insertions(+)

-- 
2.24.0

Patch

diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index 8efa368134c0..9847552faecc 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -7,6 +7,7 @@ 
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/acpi_iort.h>
 #include <linux/amba/bus.h>
 #include <linux/delay.h>
 #include <linux/dma-iommu.h>
@@ -989,6 +990,8 @@  static int viommu_set_fwnode(struct viommu_dev *viommu)
 		set_primary_fwnode(dev, fwnode);
 	}
 
+	/* Tell IORT about a PCI device's fwnode */
+	iort_iommu_update_fwnode(dev, dev->fwnode);
 	iommu_device_set_fwnode(&viommu->iommu, dev->fwnode);
 	return 0;
 }
@@ -1000,6 +1003,8 @@  static void viommu_clear_fwnode(struct viommu_dev *viommu)
 	if (!dev->fwnode)
 		return;
 
+	iort_iommu_update_fwnode(dev, NULL);
+
 	if (is_software_node(dev->fwnode)) {
 		struct fwnode_handle *fwnode = dev->fwnode;