diff mbox series

[21/60,SRU,OEM-5.6] UBUNTU: SAUCE: iommu/amd: Implement iommu_ops->def_domain_type call-back

Message ID 20200526130204.238445-22-vicamo.yang@canonical.com
State New
Headers show
Series Fix can't find root device on VMD when secureboot enabled | expand

Commit Message

You-Sheng Yang May 26, 2020, 1:01 p.m. UTC 
From: Joerg Roedel <jroedel@suse.de>

BugLink: https://bugs.launchpad.net/bugs/1876707

Implement the new def_domain_type call-back for the AMD IOMMU driver.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20200429133712.31431-4-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
(cherry picked from commit bdf4a7c4c77dcb91bd64b53b70d9faf3184e88d8
iommu/next)
Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com>
---
 drivers/iommu/amd_iommu.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 500d0a8c966f..76d349cc11ed 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2740,6 +2740,20 @@  static void amd_iommu_iotlb_sync(struct iommu_domain *domain,
 	amd_iommu_flush_iotlb_all(domain);
 }
 
+static int amd_iommu_def_domain_type(struct device *dev)
+{
+	struct iommu_dev_data *dev_data;
+
+	dev_data = get_dev_data(dev);
+	if (!dev_data)
+		return 0;
+
+	if (dev_data->iommu_v2)
+		return IOMMU_DOMAIN_IDENTITY;
+
+	return 0;
+}
+
 const struct iommu_ops amd_iommu_ops = {
 	.capable = amd_iommu_capable,
 	.domain_alloc = amd_iommu_domain_alloc,
@@ -2759,6 +2773,7 @@  const struct iommu_ops amd_iommu_ops = {
 	.pgsize_bitmap	= AMD_IOMMU_PGSIZES,
 	.flush_iotlb_all = amd_iommu_flush_iotlb_all,
 	.iotlb_sync = amd_iommu_iotlb_sync,
+	.def_domain_type = amd_iommu_def_domain_type,
 };
 
 /*****************************************************************************