linux-toradex.git/include/linux/dma_remapping.h, branch v2.6.38.5

VT-d: support the device IOTLB

2009-05-18T13:46:26+00:00

Enable the device IOTLB (i.e. ATS) for both the bare metal and KVM
environments.

Signed-off-by: Yu Zhao 
Signed-off-by: David Woodhouse

Intel IOMMU Pass Through Support

2009-04-29T05:54:34+00:00

The patch adds kernel parameter intel_iommu=pt to set up pass through
mode in context mapping entry. This disables DMAR in linux kernel; but
KVM still runs on VT-d and interrupt remapping still works.

In this mode, kernel uses swiotlb for DMA API functions but other VT-d
functionalities are enabled for KVM. KVM always uses multi level
translation page table in VT-d. By default, pass though mode is disabled
in kernel.

This is useful when people don't want to enable VT-d DMAR in kernel but
still want to use KVM and interrupt remapping for reasons like DMAR
performance concern or debug purpose.

Signed-off-by: Fenghua Yu 
Acked-by: Weidong Han 
Signed-off-by: David Woodhouse

intel-iommu: VT-d page table to support snooping control bit

2009-03-24T09:42:54+00:00

The user can request to enable snooping control through VT-d page table.

Signed-off-by: Sheng Yang 
Signed-off-by: David Woodhouse

intel-iommu: fix build error with INTR_REMAP=y and DMAR=n

2009-01-04T10:00:05+00:00

dmar.o can be built in the CONFIG_INTR_REMAP=y case but
iommu_calculate_agaw() is only available if VT-d is built as well.

So create an inline version of iommu_calculate_agaw() for the
!CONFIG_DMAR case. The iommu->agaw value wont be used in this
case, but the code is cleaner (has less #ifdefs) if we have it around
unconditionally.

Signed-off-by: Ingo Molnar

calculate agaw for each iommu

2009-01-03T13:02:18+00:00

"SAGAW" capability may be different across iommus. Use a default agaw, but if default agaw is not supported in some iommus, choose a less supported agaw.

Signed-off-by: Weidong Han 
Signed-off-by: Joerg Roedel

intel-iommu: move iommu_prepare_gfx_mapping() out of dma_remapping.h

2009-01-03T10:57:35+00:00

Signed-off-by: Mark McLoughlin 
Signed-off-by: David Woodhouse

intel-iommu: move struct device_domain_info out of dma_remapping.h

2009-01-03T10:57:35+00:00

Signed-off-by: Mark McLoughlin 
Signed-off-by: David Woodhouse

intel-iommu: move struct dmar_domain def out dma_remapping.h

2009-01-03T10:57:35+00:00

Signed-off-by: Mark McLoughlin 
Signed-off-by: David Woodhouse

intel-iommu: move DMA PTE defs out of dma_remapping.h

2009-01-03T10:57:35+00:00

DMA_PTE_READ/WRITE are needed by kvm.

Signed-off-by: Mark McLoughlin 
Signed-off-by: David Woodhouse

intel-iommu: move context entry defs out from dma_remapping.h

2009-01-03T10:57:35+00:00

Signed-off-by: Mark McLoughlin 
Signed-off-by: David Woodhouse