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authorKeshavamurthy, Anil S <anil.s.keshavamurthy@intel.com>2007-10-22 03:41:49 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-22 19:13:18 +0400
commitba39592764ed20cee09aae5352e603a27bf56b0d (patch)
treeefe7ec88bbd4d6b08b639830352c68411a7ef7fb /include/linux/dmar.h
parentf8de50eb6b085572ea773f26e066835ea3d3028b (diff)
downloadlinux-ba39592764ed20cee09aae5352e603a27bf56b0d.tar.xz
Intel IOMMU: Intel IOMMU driver
Actual intel IOMMU driver. Hardware spec can be found at: http://www.intel.com/technology/virtualization This driver sets X86_64 'dma_ops', so hook into standard DMA APIs. In this way, PCI driver will get virtual DMA address. This change is transparent to PCI drivers. [akpm@linux-foundation.org: remove unneeded cast] [akpm@linux-foundation.org: build fix] [bunk@stusta.de: fix duplicate CONFIG_DMAR Makefile line] Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Ashok Raj <ashok.raj@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Christoph Lameter <clameter@sgi.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/dmar.h')
-rw-r--r--include/linux/dmar.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 8d3e0e38ca4d..7d683dc8ed1e 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -23,7 +23,14 @@
#include <linux/acpi.h>
#include <linux/types.h>
+#include <linux/msi.h>
+#ifdef CONFIG_DMAR
+struct intel_iommu;
+
+/* Intel IOMMU detection and initialization functions */
+extern void detect_intel_iommu(void);
+extern int intel_iommu_init(void);
extern int dmar_table_init(void);
extern int early_dmar_detect(void);
@@ -49,4 +56,19 @@ struct dmar_rmrr_unit {
int devices_cnt; /* target device count */
};
+#define for_each_drhd_unit(drhd) \
+ list_for_each_entry(drhd, &dmar_drhd_units, list)
+#define for_each_rmrr_units(rmrr) \
+ list_for_each_entry(rmrr, &dmar_rmrr_units, list)
+#else
+static inline void detect_intel_iommu(void)
+{
+ return;
+}
+static inline int intel_iommu_init(void)
+{
+ return -ENODEV;
+}
+
+#endif /* !CONFIG_DMAR */
#endif /* __DMAR_H__ */