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authorJon Mason <jdmason@us.ibm.com>2006-06-26 13:58:05 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 10:48:18 -0700
commit8d4f6b93a4aaa6b56b600cd1165c971f4395e4b3 (patch)
tree23955634ded577e53c46390714a6f069b4587c86 /include/asm-x86_64
parent2bbc419f9d51b44f3fdeea12c5b786bdace82b8e (diff)
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[PATCH] x86_64: Calgary IOMMU - introduce iommu_detected
swiotlb relies on the gart specific iommu_aperture variable to know if we discovered a hardware IOMMU before swiotlb initialization. Introduce iommu_detected to do the same thing, but in a HW IOMMU neutral manner, in preparation for adding the Calgary HW IOMMU. Signed-Off-By: Muli Ben-Yehuda <muli@il.ibm.com> Signed-Off-By: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
-rw-r--r--include/asm-x86_64/proto.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index 105476ff8039..9d3335b4e9b6 100644
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -116,6 +116,7 @@ extern int skip_ioapic_setup;
extern int acpi_ht;
extern int acpi_disabled;
+extern int iommu_detected;
#ifdef CONFIG_IOMMU
extern int fallback_aper_order;
extern int fallback_aper_force;