#define pr_fmt(fmt) "ACPI: IORT: " fmt
#include <linux/acpi_iort.h>
+#include <linux/bitfield.h>
#include <linux/iommu.h>
#include <linux/kernel.h>
#include <linux/list.h>
return iort_iommu_xlate(info->dev, parent, streamid);
}
+static void iort_named_component_init(struct device *dev,
+ struct acpi_iort_node *node)
+{
+ struct acpi_iort_named_component *nc;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+
+ if (!fwspec)
+ return;
+
+ nc = (struct acpi_iort_named_component *)node->node_data;
+ fwspec->num_pasid_bits = FIELD_GET(ACPI_IORT_NC_PASID_BITS,
+ nc->node_flags);
+}
+
/**
* iort_iommu_configure - Set-up IOMMU configuration for a device.
*
if (parent)
err = iort_iommu_xlate(dev, parent, streamid);
} while (parent && !err);
+
+ if (!err)
+ iort_named_component_init(dev, node);
}
/*