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Subject[PATCH 11/23] AMD IOMMU: enable event logging
Date
The code to log IOMMU events is in place now. So enable event logging
with this patch.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/amd_iommu_init.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 07709a9..5182132 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -254,6 +254,13 @@ void __init iommu_enable(struct amd_iommu *iommu)
iommu_feature_enable(iommu, CONTROL_IOMMU_EN);
}

+/* Function to enable IOMMU event logging and event interrupts */
+void __init iommu_enable_event_logging(struct amd_iommu *iommu)
+{
+ iommu_feature_enable(iommu, CONTROL_EVT_LOG_EN);
+ iommu_feature_enable(iommu, CONTROL_EVT_INT_EN);
+}
+
/*
* mapping and unmapping functions for the IOMMU MMIO space. Each AMD IOMMU in
* the system has one.
@@ -959,6 +966,7 @@ static void __init enable_iommus(void)
list_for_each_entry(iommu, &amd_iommu_list, list) {
iommu_set_exclusion_range(iommu);
iommu_init_msi(iommu);
+ iommu_enable_event_logging(iommu);
iommu_enable(iommu);
}
}
--
1.5.6.4



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