summaryrefslogtreecommitdiffstats
path: root/drivers/iommu
diff options
context:
space:
mode:
authorJoerg Roedel <joerg.roedel@amd.com>2012-06-12 16:30:06 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2012-07-17 12:14:59 +0200
commit11ee5ac47b78d7e117c84147596a124ce6421a3a (patch)
tree2346d50c7cb7e6341c1d288547bf06b0a845a9db /drivers/iommu
parent643511b37eb72d831646bacafaeace1eeadf5a54 (diff)
downloadblackbird-op-linux-11ee5ac47b78d7e117c84147596a124ce6421a3a.tar.gz
blackbird-op-linux-11ee5ac47b78d7e117c84147596a124ce6421a3a.zip
iommu/amd: Split enable_iommus() routine
Split the enable_iommus() routine so that a part of it can run in early code. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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;
OpenPOWER on IntegriCloud