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path: root/drivers/iommu
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Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu_init.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index a5dbefb8e260..b82cf447724e 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1379,7 +1379,7 @@ static void iommu_apply_resume_quirks(struct amd_iommu *iommu)
* This function finally enables all IOMMUs found in the system after
* they have been initialized
*/
-static void enable_iommus(void)
+static void early_enable_iommus(void)
{
struct amd_iommu *iommu;
@@ -1389,14 +1389,29 @@ static void enable_iommus(void)
iommu_set_device_table(iommu);
iommu_enable_command_buffer(iommu);
iommu_enable_event_buffer(iommu);
- iommu_enable_ppr_log(iommu);
- iommu_enable_gt(iommu);
iommu_set_exclusion_range(iommu);
iommu_enable(iommu);
iommu_flush_all_caches(iommu);
}
}
+static void enable_iommus_v2(void)
+{
+ struct amd_iommu *iommu;
+
+ for_each_iommu(iommu) {
+ iommu_enable_ppr_log(iommu);
+ iommu_enable_gt(iommu);
+ }
+}
+
+static void enable_iommus(void)
+{
+ early_enable_iommus();
+
+ enable_iommus_v2();
+}
+
static void disable_iommus(void)
{
struct amd_iommu *iommu;