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The DISTLBWALKPRB bit must be set for the GART because the
gatt table is mapped UC. But the current code does not set
the bit at boot when the BIOS setup the aperture correctly.
Fix that by setting this bit when enabling the GART instead
of the other places.
Cc: <[email protected]>
Cc: Borislav Petkov <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: H. Peter Anvin <[email protected]>
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Probably by copy&paste this function was indented by spaces.
Convert this to tabs.
Signed-off-by: Joerg Roedel <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: H. Peter Anvin <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, iommu: Update header comments with appropriate naming
ia64, iommu: Add a dummy iommu_table.h file in IA64.
x86, iommu: Fix IOMMU_INIT alignment rules
x86, doc: Adding comments about .iommu_table and its neighbors.
x86, iommu: Utilize the IOMMU_INIT macros functionality.
x86, VT-d: Make Intel VT-d IOMMU use IOMMU_INIT_* macros.
x86, GART/AMD-VI: Make AMD GART and IOMMU use IOMMU_INIT_* macros.
x86, calgary: Make Calgary IOMMU use IOMMU_INIT_* macros.
x86, xen-swiotlb: Make Xen-SWIOTLB use IOMMU_INIT_* macros.
x86, swiotlb: Make SWIOTLB use IOMMU_INIT_* macros.
x86, swiotlb: Simplify SWIOTLB pci_swiotlb_detect routine.
x86, iommu: Add proper dependency sort routine (and sanity check).
x86, iommu: Make all IOMMU's detection routines return a value.
x86, iommu: Add IOMMU_INIT macros, .iommu_table section, and iommu_table_entry structure
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Current code tramples over bit F3x90[6] which can be used to
disable GART table walk probes. However, this bit should be set
for performance reasons (speed up GART table walks). We are
allowed to do that since we put GART tables in UC memory later
anyway. Make it so.
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: FUJITA Tomonori <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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There is a GARTEN so use that and drop the duplicate.
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: FUJITA Tomonori <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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We return 1 if the IOMMU has been detected. Zero or an error number
if we failed to find it. This is in preperation of using the IOMMU_INIT
so that we can detect whether an IOMMU is present. I have not
tested this for regression on Calgary, nor on AMD Vi chipsets as
I don't have that hardware.
CC: Muli Ben-Yehuda <[email protected]>
CC: "Jon D. Mason" <[email protected]>
CC: "Darrick J. Wong" <[email protected]>
CC: Jesse Barnes <[email protected]>
CC: David Woodhouse <[email protected]>
CC: Chris Wright <[email protected]>
CC: Yinghai Lu <[email protected]>
CC: Joerg Roedel <[email protected]>
CC: H. Peter Anvin <[email protected]>
CC: Fujita Tomonori <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
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This changes gart_iommu_hole_init() to set gart_iommu_init() to
iommu_init hook if gart_iommu_hole_init() finds the GART IOMMU.
We can kill the code to check if we found the IOMMU in
gart_iommu_init() since gart_iommu_hole_init() sets
gart_iommu_init() only when it found the IOMMU.
Signed-off-by: FUJITA Tomonori <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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This patch cleans up pci_iommu_shutdown() a bit to use
x86_platform (similar to how IA64 initializes an IOMMU driver).
This adds iommu_shutdown() to x86_platform to avoid calling
every IOMMUs' shutdown functions in pci_iommu_shutdown() in
order. The IOMMU shutdown functions are platform specific (we
don't have multiple different IOMMU hardware) so the current way
is pointless.
An IOMMU driver sets x86_platform.iommu_shutdown to the shutdown
function if necessary.
Signed-off-by: FUJITA Tomonori <[email protected]>
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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Impact: cleanup
Signed-off-by: Joerg Roedel <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
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Change header guards named "ASM_X86__*" to "_ASM_X86_*" since:
a. the double underscore is ugly and pointless.
b. no leading underscore violates namespace constraints.
Signed-off-by: H. Peter Anvin <[email protected]>
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Signed-off-by: Al Viro <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
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