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authorSuresh Siddha <suresh.b.siddha@intel.com>2008-07-10 11:16:43 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-12 08:44:53 +0200
commit2ae21010694e56461a63bfc80e960090ce0a5ed9 (patch)
treed4ecdb710c4361df473b063eda9e1426fcf5c309 /drivers/pci/dmar.c
parentfe962e90cb17a8426e144dee970e77ed789d98ee (diff)
downloadop-kernel-dev-2ae21010694e56461a63bfc80e960090ce0a5ed9.zip
op-kernel-dev-2ae21010694e56461a63bfc80e960090ce0a5ed9.tar.gz
x64, x2apic/intr-remap: Interrupt remapping infrastructure
Interrupt remapping (part of Intel Virtualization Tech for directed I/O) infrastructure. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/pci/dmar.c')
-rw-r--r--drivers/pci/dmar.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index aba151c..23a119e 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -449,6 +449,22 @@ int __init early_dmar_detect(void)
return (ACPI_SUCCESS(status) ? 1 : 0);
}
+void __init detect_intel_iommu(void)
+{
+ int ret;
+
+ ret = early_dmar_detect();
+
+#ifdef CONFIG_DMAR
+ {
+ if (ret && !no_iommu && !iommu_detected && !swiotlb &&
+ !dmar_disabled)
+ iommu_detected = 1;
+ }
+#endif
+}
+
+
int alloc_iommu(struct dmar_drhd_unit *drhd)
{
struct intel_iommu *iommu;
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