[PATCH 08/28] iommu/amd: Split enable_iommus() routine

[Joerg Roedel]

Split the enable_iommus() routine so that a part of it can
run in early code.

Signed-off-by: Joerg Roedel <joerg.roe...@amd.com>
---
 drivers/iommu/amd_iommu_init.c |   26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 1b23235..2324f9b 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1382,7 +1382,7 @@ 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;
 
@@ -1392,12 +1392,30 @@ 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);
        }
+
+       x86_platform.iommu_shutdown = disable_iommus;
+
+}
+
+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)
@@ -1696,8 +1714,6 @@ static int __init amd_iommu_init(void)
        else
                printk(KERN_INFO "AMD-Vi: Lazy IO/TLB flushing enabled\n");
 
-       x86_platform.iommu_shutdown = disable_iommus;
-
 out:
        return ret;
 
-- 
1.7.9.5


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