o leverage the device tree ordering,
and assign a property to the last SMMU device, and set the bus ops
at that point? Or perhaps have some deferred timer based approach
to know when to set the bus ops?
Thanks,
Isaac
Isaac J. Manjarres (4):
of: Export of_phandle_iterator_args() to modules
PCI: Expo
. Otherwise, rely on the
driver core to dictate when clients should stop deferring
their probes.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/of_iommu.c | 8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c
index
IOMMU drivers that can be compiled as modules may
want to use pci_for_each_dma_alias() and pci_request_acs(),
so export those functions.
Signed-off-by: Isaac J. Manjarres
---
drivers/pci/pci.c| 1 +
drivers/pci/search.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/drivers/pci/pci.c
IOMMU drivers that can be compiled as modules need to use
some of the IOMMU core functions, so expose them.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu-sysfs.c | 3 +++
drivers/iommu/iommu.c | 6 ++
2 files changed, 9 insertions(+)
diff --git a/drivers/iommu/iommu
Kernel modules may want to use of_phandle_iterator_args(),
so export it.
Signed-off-by: Isaac J. Manjarres
---
drivers/of/base.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 20e0e7e..8b9c597 100644
--- a/drivers/of/base.c
+++ b/drivers
erent dma allocator")
Signed-off-by: Isaac J. Manjarres
Cc: sta...@vger.kernel.org
---
include/linux/dma-mapping.h | 6 +++---
kernel/dma/coherent.c | 8
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
ind
On Wed, Oct 30, 2019 at 02:51:12PM +, Will Deacon wrote:
> By conditionally dropping support for the legacy binding and exporting
> the newly introduced 'arm_smmu_impl_init()' function we can allow the
> ARM SMMU driver to be built as a module.
>
> Signed-off-by: Will Deacon
> ---
>
the buffers to be
cached in the outer-level/system cache.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/dma-iommu.c | 2 ++
include/linux/dma-mapping.h | 8
2 files changed, 10 insertions(+)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index f321279..c433ece 100644
From: Liam Mark
Using the best-fit algorithm, instead of the first-fit
algorithm, may reduce fragmentation when allocating
IOVAs.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/dma-iommu.c | 17 +++
drivers/iommu/iova.c | 73
: I15bd1d313d889c2572d0eb2adecf6bebde3267f7
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/dma-iommu.c | 28
include/linux/dma-iommu.h | 9 +
2 files changed, 37 insertions(+)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index a2e96a5..3b83e1a 100644
--- a/drivers/iommu/dma
in the io-pgtable layer.
For IOMMU drivers that do not provide a callback, the default
implementation of iterating through the scatter-gather list, while
calling iommu_map() will be used.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
drivers/iommu/iommu.c | 13
calls, and
boosting overall iommu_map_sg() performance.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
include/linux/io-pgtable.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index ea727eb..6d0e731 100644
Implement the map_sg io-pgtable op for the ARM LPAE io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
drivers/iommu/io-pgtable-arm.c | 86
Now that everything is in place for iommu_map_sg() to defer
mapping a scatter-gather list to the io-pgtable layer, implement
the map_sg() callback in the SMMU driver, so that iommu_map_sg()
can invoke it with the entire scatter-gather list that will be
mapped.
Signed-off-by: Isaac J. Manjarres
address ranges being
mapped are within the appropriate limits.
-Added Sai Prakash Ranjan's "Tested-by" tag.
Thanks,
Isaac
Isaac J. Manjarres (5):
iommu/io-pgtable: Introduce map_sg() as a page table op
iommu/io-pgtable-arm: Hook up map_sg()
iommu/io-pgtable-arm-v7s: Hook up map_sg
Implement the map_sg io-pgtable op for the ARMv7s io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
drivers/iommu/io-pgtable-arm-v7s.c | 90
module.
Thanks in advance for the feedback,
Isaac J. Manjarres
Isaac J. Manjarres (3):
iommu/io-pgtable-arm: Prepare for modularization
iommu/io-pgtable: Prepare for modularization
iommu/io-pgtable: Allow building as a module
drivers/iommu/Kconfig | 6 +++---
drivers/iommu/io
The io-pgtable-arm and io-pgtable-arm-v7s source files will
be compiled as separate modules, along with the io-pgtable
source. Export the symbols for the io-pgtable init function
structures for the io-pgtable module to use.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm
() instead.
Also, add the GPL v2 module license to the io-pgtable source file.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable.c | 7 +--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/io-pgtable.c b/drivers/iommu/io-pgtable.c
index 94394c8..867ecb4
with
the descriptor format (either or both ARM LPAE and ARMV7S)
can be built as modules.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/Kconfig | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 192ef8f..d7de6db 100644
ng the ARM SMMU driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c
b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index d8c6bfd..a72649f 100644
--- a/drivers/iommu/arm/ar
ARM SMMUv3 driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 8ca7415..c498ac8 100644
--- a/drivers/iom
the Kconfig options for the ARM LPAE nad ARM V7S to tristate.
Thanks in advance for the feedback,
Isaac J. Manjarres
Isaac J. Manjarres (7):
iommu/io-pgtable: Introduce dynamic io-pgtable fmt registration
iommu/io-pgtable: Add refcounting for io-pgtable format modules
iommu/arm-smmu: Add dependency
In preparation for modularizing io-pgtable formats, add support
for reference counting the io-pgtable format modules to ensure
that the modules are not unloaded while they are in use.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 1 +
drivers/iommu/io-pgtable-arm.c
re loading the Panfrost DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/panfrost/panfrost_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c
b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 83a461b..7294622 100644
--- a/drivers/gpu/dr
Now that everything is in place for modular io-pgtable formats,
allow the ARM LPAE and ARMV7S io-pgtable formats to be built
as modules.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/Kconfig | 4 ++--
drivers/iommu/io-pgtable-arm-v7s.c | 2 ++
drivers/iommu/io-pgtable-arm.c
-pgtable formats, switch to a
dynamic registration scheme, where each io-pgtable format can register
their init functions with the io-pgtable code at boot or module
insertion time.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 34 +-
drivers/iommu/io-pgtable
he MSM DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/msm/msm_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 535a026..8be3506 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm
to be enabled without having to select
either page table format. The reason for doing this is so that a kernel
can be built, such that it only provides the interface for io-pgtable
formats to be registered as modules, as would be the case for the GKI.
Thanks,
Isaac
Isaac J. Manjarres (7):
iommu/io
each io-pgtable format can register
their init functions with the io-pgtable code at boot or module
insertion time.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 33 -
drivers/iommu/io-pgtable-arm.c | 97 --
drivers
e ARM SMMU
driver module. Also, add a dependency on the ARMv7 short descriptor
io-pgtable format, so that it can be loaded before the SMMU driver
module, if available.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git
ARM SMMUv3 driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 8ca7415..c498ac8 100644
--- a/drivers/iom
re loading the Panfrost DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/panfrost/panfrost_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c
b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 83a461b..7294622 100644
--- a/drivers/gpu/dr
Now that everything is in place for modular io-pgtable formats,
allow the ARM LPAE and ARMV7S io-pgtable formats to be built
as modules, and allow the io-pgtable framework to be enabled,
without having to explicitly enable an io-pgtable format.
Signed-off-by: Isaac J. Manjarres
---
drivers
In preparation for modularizing io-pgtable formats, add support
for reference counting the io-pgtable format modules to ensure
that the modules are not unloaded while they are in use.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 1 +
drivers/iommu/io-pgtable-arm.c
he MSM DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/msm/msm_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 535a026..8be3506 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm
to be enabled without having to select
either page table format. The reason for doing this is so that a kernel
can be built, such that it only provides the interface for io-pgtable
formats to be registered as modules, as would be the case for the GKI.
Thanks,
Isaac
Isaac J. Manjarres (7):
iommu/io
e ARM SMMU
driver module. Also, add a dependency on the ARMv7 short descriptor
io-pgtable format, so that it can be loaded before the SMMU driver
module, if available.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git
each io-pgtable format can register
their init functions with the io-pgtable code at boot or module
insertion time.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 33 -
drivers/iommu/io-pgtable-arm.c | 97 --
drivers
Now that everything is in place for modular io-pgtable formats,
allow the ARM LPAE and ARMV7S io-pgtable formats to be built
as modules, and allow the io-pgtable framework to be enabled,
without having to explicitly enable an io-pgtable format.
Signed-off-by: Isaac J. Manjarres
---
drivers
re loading the Panfrost DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/panfrost/panfrost_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c
b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 83a461b..7294622 100644
--- a/drivers/gpu/dr
ARM SMMUv3 driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 8ca7415..c498ac8 100644
--- a/drivers/iom
In preparation for modularizing io-pgtable formats, add support
for reference counting the io-pgtable format modules to ensure
that the modules are not unloaded while they are in use.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 1 +
drivers/iommu/io-pgtable-arm.c
he MSM DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/msm/msm_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 535a026..8be3506 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm
latencies is
the same in both experiments. Clearly, reducing the jumps
between the different layers in the IOMMU code offers a
signficant performance boost in iommu_map_sg() latency.
Thanks,
Isaac
Isaac J. Manjarres (5):
iommu/io-pgtable: Introduce map_sg() as a page table op
iommu/io-pgtable
calls, and
boosting overall iommu_map_sg() performance.
Signed-off-by: Isaac J. Manjarres
---
include/linux/io-pgtable.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index ea727eb..6d0e731 100644
--- a/include/linux/io-pgtable.h
in the io-pgtable layer.
For IOMMU drivers that do not provide a callback, the default
implementation of iterating through the scatter-gather list, while
calling iommu_map() will be used.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c | 13 +
include/linux/iommu.h | 5 +
2
Implement the map_sg io-pgtable op for the ARMv7s io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 90 ++
1 file changed, 90 insertions
Implement the map_sg io-pgtable op for the ARM LPAE io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm.c | 86 ++
drivers/iommu/iommu.c
Now that everything is in place for iommu_map_sg() to defer
mapping a scatter-gather list to the io-pgtable layer, implement
the map_sg() callback in the SMMU driver, so that iommu_map_sg()
can invoke it with the entire scatter-gather list that will be
mapped.
Signed-off-by: Isaac J. Manjarres
ad back stream mappings")
Signed-off-by: Isaac J. Manjarres
Cc: sta...@vger.kernel.org
---
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index bcda170..abb1d2
improvements to iommu_pgsize() will need to check the
alignment of the virtual and physical components of 'addr_merge'
independently, so pass them in as separate parameters and reconstruct
'addr_merge' locally.
No functional change.
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
to the patch which changes
iommu_pgsize() to use bitmaps by using the ULL variants of
the bitops)
Any feedback is very much appreciated.
Isaac J. Manjarres (9):
iommu/io-pgtable: Introduce unmap_pages() as a page table op
iommu: Add an unmap_pages() op for IOMMU drivers
iommu/io-pgtable
Implement the unmap_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/io-pgtable-arm.c | 124 +++--
1 file changed, 104 insertions(+), 20 deletions(-)
diff --git a/drivers/iommu/io
From: Will Deacon
Extend iommu_pgsize() to populate an optional 'count' paramater so that
we can direct unmapping operation to the ->unmap_pages callback if it
has been provided by the driver.
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c |
Implement the unmap_pages() callback for the ARM SMMU driver
to allow calls from iommu_unmap to unmap multiple pages of
the same size in one call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 19 +++
1 file changed, 19
Implement the map_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/io-pgtable-arm.c | 95 +++---
1 file changed, 88 insertions(+), 7 deletions(-)
diff --git a/drivers/iommu/io-pgtable
Since iommu_pgsize can calculate how many pages of the
same size can be mapped/unmapped before the next largest
page size boundary, add support for invoking an IOMMU
driver's map_pages() callback, if it provides one.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu
so allows
multiple blocks to be unmapped in one call to the io-pgtable
code, reducing the number of page table walks, and indirect
calls.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Signed-off-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions
-pgtable
ops structure, so that a range of pages of the same size
can be mapped within the same call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io
Implement the unmap_pages() callback for the ARM SMMU driver
to allow calls from iommu_unmap to unmap multiple pages of
the same size in one call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 19 +++
1 file changed, 19
of unmapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Signed-off-by: Will Deacon
---
include/linux/iommu.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 5e7fe519430a
of mapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/iommu.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 9cf81242581a..528d6a58479e 100644
--- a/include
From: Will Deacon
Avoid the potential for shifting values by amounts greater than the
width of their type by using a bitmap to compute page size in
iommu_pgsize().
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c | 31 ---
1
* Integrated Will's patches into this series which
address several concerns about how iommu_pgsize() partitioned a
buffer (I made a minor change to the patch which changes
iommu_pgsize() to use bitmaps by using the ULL variants of
the bitops)
Isaac J. Manjarres (9):
iommu/io-pgtable: Introduce
-pgtable
ops structure, so that a range of pages of the same size
can be mapped within the same call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io
of mapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/iommu.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 9cf81242581a..528d6a58479e 100644
--- a/include
Implement the unmap_pages() callback for the ARM SMMU driver
to allow calls from iommu_unmap to unmap multiple pages of
the same size in one call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 19 +++
1 file changed, 19
Implement the unmap_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/io-pgtable-arm.c | 124 +++--
1 file changed, 104 insertions(+), 20 deletions(-)
diff --git a/drivers/iommu/io
Implement the map_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/io-pgtable-arm.c | 95 +++---
1 file changed, 88 insertions(+), 7 deletions(-)
diff --git a/drivers/iommu/io-pgtable
Since iommu_pgsize can calculate how many pages of the
same size can be mapped/unmapped before the next largest
page size boundary, add support for invoking an IOMMU
driver's map_pages() callback, if it provides one.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu
of unmapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Signed-off-by: Will Deacon
---
include/linux/iommu.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 5e7fe519430a
From: Will Deacon
Avoid the potential for shifting values by amounts greater than the
width of their type by using a bitmap to compute page size in
iommu_pgsize().
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c | 31 ---
1
improvements to iommu_pgsize() will need to check the
alignment of the virtual and physical components of 'addr_merge'
independently, so pass them in as separate parameters and reconstruct
'addr_merge' locally.
No functional change.
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
so allows
multiple blocks to be unmapped in one call to the io-pgtable
code, reducing the number of page table walks, and indirect
calls.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Signed-off-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions
From: Will Deacon
Extend iommu_pgsize() to populate an optional 'count' paramater so that
we can direct unmapping operation to the ->unmap_pages callback if it
has been provided by the driver.
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c |
Implement the unmap_pages() callback for the ARM SMMU driver
to allow calls from iommu_unmap to unmap multiple pages of
the same size in one call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 19 +++
1 file changed, 19
of the same size can be unmapped in one shot, and invoke the
IOMMU driver's unmap_pages callback if it has one. Otherwise, the
existing behavior will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/iommu.c | 44 +--
1 file
Implement the unmap_pages IOMMU driver callback for the ARM
SMMU driver.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c
b
of unmapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/iommu.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 5e7fe519430a..9cf81242581a 100644
Implement the unmap_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/io-pgtable-arm.c | 114 +++--
1 file changed, 94 insertions(+), 20 deletions(-)
diff --git a/drivers/iommu/io
so allows
multiple blocks to be unmapped in one call to the io-pgtable
code, reducing the number of page table walks, and indirect
calls.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions(+)
diff --git a/include
feedback is very much appreciated.
Thanks,
Isaac
Isaac J. Manjarres (5):
iommu/io-pgtable: Introduce unmap_pages() as a page table op
iommu: Add an unmap_pages() op for IOMMU drivers
iommu: Add support for the unmap_pages IOMMU callback
iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages
From: Will Deacon
Avoid the potential for shifting values by amounts greater than the
width of their type by using a bitmap to compute page size in
iommu_pgsize().
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c | 31 ---
1
Implement the unmap_pages() callback for the ARM v7s io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 24 +---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c
b/drivers/iommu/io
Implement the map_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm.c | 42 ++
1 file changed, 32 insertions(+), 10 deletions(-)
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io
Implement the map_pages() callback for the ARM SMMU driver
to allow calls from iommu_map to map multiple pages of
the same size in one call. Also, remove the map() callback
for the ARM SMMU driver, as it will no longer be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
improvements to iommu_pgsize() will need to check the
alignment of the virtual and physical components of 'addr_merge'
independently, so pass them in as separate parameters and reconstruct
'addr_merge' locally.
No functional change.
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
The PTE methods currently operate on a single entry. In preparation
for manipulating multiple PTEs in one map or unmap call, allow them
to handle multiple PTEs.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Robin Murphy
---
drivers/iommu/io-pgtable-arm.c | 78
Implement the unmap_pages() callback for the ARM SMMU driver
to allow calls from iommu_unmap to unmap multiple pages of
the same size in one call. Also, remove the unmap() callback
for the SMMU driver, as it will no longer be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Implement the map_pages() callback for the ARM v7s io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 26 ++
1 file changed, 22 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c
b/drivers/iommu/io
address several concerns about how iommu_pgsize() partitioned a
buffer (I made a minor change to the patch which changes
iommu_pgsize() to use bitmaps by using the ULL variants of
the bitops)
Isaac J. Manjarres (12):
iommu/io-pgtable: Introduce unmap_pages() as a page table op
iommu: Add
of unmapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Signed-off-by: Will Deacon
Acked-by: Lu Baolu
---
include/linux/iommu.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
Since iommu_pgsize can calculate how many pages of the
same size can be mapped/unmapped before the next largest
page size boundary, add support for invoking an IOMMU
driver's map_pages() callback, if it provides one.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu
of mapping memory one page block at a time
will be used.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Acked-by: Lu Baolu
---
include/linux/iommu.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 9cf81242581a..528d6a58479e
From: Will Deacon
Extend iommu_pgsize() to populate an optional 'count' parameter so that
we can direct unmapping operation to the ->unmap_pages callback if it
has been provided by the driver.
Signed-off-by: Will Deacon
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c |
so allows
multiple blocks to be unmapped in one call to the io-pgtable
code, reducing the number of page table walks, and indirect
calls.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
Signed-off-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions
-pgtable
ops structure, so that a range of pages of the same size
can be mapped within the same call.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
include/linux/io-pgtable.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io
Implement the unmap_pages() callback for the ARM LPAE io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
Suggested-by: Will Deacon
---
drivers/iommu/io-pgtable-arm.c | 75 ++
1 file changed, 49 insertions(+), 26 deletions(-)
diff --git a/drivers/iommu/io
Implement the unmap_pages() callback for the ARM v7s io-pgtable
format.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 23 ---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c
b/drivers/iommu/io
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