Merge tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi

[deliverable/linux.git] / drivers / iommu / amd_iommu_init.c

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 0e08545d72989e114f016751f68df5a3191088c0..3783e0b44df62898b7be150f9b7c30eaf6658e03 100644 (file)
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -26,6 +26,7 @@
 #include <linux/msi.h>
 #include <linux/amd-iommu.h>
 #include <linux/export.h>
+#include <linux/iommu.h>
 #include <asm/pci-direct.h>
 #include <asm/iommu.h>
 #include <asm/gart.h>
@@ -1197,6 +1198,39 @@ static void init_iommu_perf_ctr(struct amd_iommu *iommu)
        iommu->max_counters = (u8) ((val >> 7) & 0xf);
 }
 
+static ssize_t amd_iommu_show_cap(struct device *dev,
+                                 struct device_attribute *attr,
+                                 char *buf)
+{
+       struct amd_iommu *iommu = dev_get_drvdata(dev);
+       return sprintf(buf, "%x\n", iommu->cap);
+}
+static DEVICE_ATTR(cap, S_IRUGO, amd_iommu_show_cap, NULL);
+
+static ssize_t amd_iommu_show_features(struct device *dev,
+                                      struct device_attribute *attr,
+                                      char *buf)
+{
+       struct amd_iommu *iommu = dev_get_drvdata(dev);
+       return sprintf(buf, "%llx\n", iommu->features);
+}
+static DEVICE_ATTR(features, S_IRUGO, amd_iommu_show_features, NULL);
+
+static struct attribute *amd_iommu_attrs[] = {
+       &dev_attr_cap.attr,
+       &dev_attr_features.attr,
+       NULL,
+};
+
+static struct attribute_group amd_iommu_group = {
+       .name = "amd-iommu",
+       .attrs = amd_iommu_attrs,
+};
+
+static const struct attribute_group *amd_iommu_groups[] = {
+       &amd_iommu_group,
+       NULL,
+};
 
 static int iommu_init_pci(struct amd_iommu *iommu)
 {
@@ -1297,6 +1331,10 @@ static int iommu_init_pci(struct amd_iommu *iommu)
 
        amd_iommu_erratum_746_workaround(iommu);
 
+       iommu->iommu_dev = iommu_device_create(&iommu->dev->dev, iommu,
+                                              amd_iommu_groups, "ivhd%d",
+                                              iommu->index);
+
        return pci_enable_device(iommu->dev);
 }