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authorJoerg Roedel <joerg.roedel@amd.com>2008-09-09 16:47:35 +0200
committerIngo Molnar <mingo@elte.hu>2008-09-19 12:59:17 +0200
commit126c52be4b1d2eb667a1d140f0ceaff9d353f700 (patch)
tree8b6bf75d6b6b11be14101cf25a9a94dedf2caa92 /arch/x86
parent90008ee4b811c944455752dcb72b291a5ba81b53 (diff)
downloadop-kernel-dev-126c52be4b1d2eb667a1d140f0ceaff9d353f700.zip
op-kernel-dev-126c52be4b1d2eb667a1d140f0ceaff9d353f700.tar.gz
AMD IOMMU: enable event logging
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> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/amd_iommu_init.c8
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 eed4888..1974b73 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -253,6 +253,13 @@ 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.
@@ -958,6 +965,7 @@ 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);
}
}
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