summaryrefslogtreecommitdiff
path: root/drivers/iommu/intel/iommu.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
-rw-r--r--drivers/iommu/intel/iommu.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 5c8c5cdc36cf..9e6f78830ece 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -22,6 +22,7 @@
#include <linux/spinlock.h>
#include <linux/syscore_ops.h>
#include <linux/tboot.h>
+#include <uapi/linux/iommufd.h>
#include "iommu.h"
#include "../dma-iommu.h"
@@ -4732,8 +4733,26 @@ static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid)
intel_pasid_tear_down_entry(iommu, dev, pasid, false);
}
+static void *intel_iommu_hw_info(struct device *dev, u32 *length, u32 *type)
+{
+ struct device_domain_info *info = dev_iommu_priv_get(dev);
+ struct intel_iommu *iommu = info->iommu;
+ struct iommu_hw_info_vtd *vtd;
+
+ vtd = kzalloc(sizeof(*vtd), GFP_KERNEL);
+ if (!vtd)
+ return ERR_PTR(-ENOMEM);
+
+ vtd->cap_reg = iommu->cap;
+ vtd->ecap_reg = iommu->ecap;
+ *length = sizeof(*vtd);
+ *type = IOMMU_HW_INFO_TYPE_INTEL_VTD;
+ return vtd;
+}
+
const struct iommu_ops intel_iommu_ops = {
.capable = intel_iommu_capable,
+ .hw_info = intel_iommu_hw_info,
.domain_alloc = intel_iommu_domain_alloc,
.probe_device = intel_iommu_probe_device,
.probe_finalize = intel_iommu_probe_finalize,