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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.

[[email protected]: remove unneeded cast]
[[email protected]: build fix]
[[email protected]: fix duplicate CONFIG_DMAR Makefile line]
Signed-off-by: Anil S Keshavamurthy <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Muli Ben-Yehuda <[email protected]>
Cc: "Siddha, Suresh B" <[email protected]>
Cc: Arjan van de Ven <[email protected]>
Cc: Ashok Raj <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Greg KH <[email protected]>
Signed-off-by: Adrian Bunk <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Keshavamurthy, Anil S 2007-10-21 16:41:49 -07:00 • committed by Linus Torvalds
commit ba39592764
7 changed files with 2406 additions and 1 deletions
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10
Documentation/kernel-parameters.txt
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@ -772,6 +772,16 @@ and is between 256 and 4096 characters. It is defined in the file
inttest= [IA64]
intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
off
Disable intel iommu driver.
igfx_off [Default Off]
By default, gfx is mapped as normal device. If a gfx
device has a dedicated DMAR unit, the DMAR unit is
bypassed by not enabling DMAR with this option. In
this case, gfx device will use physical address for
DMA.
io7= [HW] IO7 for Marvel based alpha systems
See comment before marvel_specify_io7 in
arch/alpha/kernel/core_marvel.c.