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Intel IOMMU: Intel IOMMU driver

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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>
This commit is contained in:
Keshavamurthy, Anil S 2007-10-21 16:41:49 -07:00 • committed by Linus Torvalds
parent f8de50eb6b
commit ba39592764
7 changed files with 2406 additions and 1 deletions
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22
include/linux/dmar.h
View file

@ -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__ */