linux.git/include/linux/iommu.h, branch v5.7-rc2

iommu: Move fwspec->iommu_priv to struct dev_iommu

2020-03-27T10:14:52+00:00

Move the pointer for iommu private data from struct iommu_fwspec to
struct dev_iommu.

Signed-off-by: Joerg Roedel 
Tested-by: Will Deacon  # arm-smmu
Reviewed-by: Jean-Philippe Brucker 
Link: https://lore.kernel.org/r/20200326150841.10083-17-joro@8bytes.org

iommu: Introduce accessors for iommu private data

2020-03-27T10:14:51+00:00

Add dev_iommu_priv_get/set() functions to access per-device iommu
private data. This makes it easier to move the pointer to a different
location.

Signed-off-by: Joerg Roedel 
Tested-by: Will Deacon  # arm-smmu
Reviewed-by: Jean-Philippe Brucker 
Link: https://lore.kernel.org/r/20200326150841.10083-9-joro@8bytes.org

iommu: Move iommu_fwspec to struct dev_iommu

2020-03-27T10:14:51+00:00

Move the iommu_fwspec pointer in struct device into struct dev_iommu.
This is a step in the effort to reduce the iommu related pointers in
struct device to one.

Signed-off-by: Joerg Roedel 
Tested-by: Will Deacon  # arm-smmu
Reviewed-by: Jean-Philippe Brucker 
Reviewed-by: Greg Kroah-Hartman 
Cc: Greg Kroah-Hartman 
Link: https://lore.kernel.org/r/20200326150841.10083-7-joro@8bytes.org

iommu: Rename struct iommu_param to dev_iommu

2020-03-27T10:12:19+00:00

The term dev_iommu aligns better with other existing structures and
their accessor functions.

Signed-off-by: Joerg Roedel 
Tested-by: Will Deacon  # arm-smmu
Reviewed-by: Jean-Philippe Brucker 
Reviewed-by: Greg Kroah-Hartman 
Cc: Greg Kroah-Hartman 
Link: https://lore.kernel.org/r/20200326150841.10083-6-joro@8bytes.org

iommu: Define dev_iommu_fwspec_get() for !CONFIG_IOMMU_API

2020-03-27T10:12:19+00:00

There are users outside of the IOMMU code that need to call that
function. Define it for !CONFIG_IOMMU_API too so that compilation does
not break.

Reported-by: kbuild test robot 
Signed-off-by: Joerg Roedel 
Reviewed-by: Jean-Philippe Brucker 
Link: https://lore.kernel.org/r/20200326150841.10083-2-joro@8bytes.org

iommu: Use C99 flexible array in fwspec

2020-02-28T15:20:04+00:00

Although the 1-element array was a typical pre-C99 way to implement
variable-length structures, and indeed is a fundamental construct in the
APIs of certain other popular platforms, there's no good reason for it
here (and in particular the sizeof() trick is far too "clever" for its
own good). We can just as easily implement iommu_fwspec's preallocation
behaviour using a standard flexible array member, so let's make it look
the way most readers would expect.

Signed-off-by: Robin Murphy 
Signed-off-by: Joerg Roedel

Merge branches 'iommu/fixes', 'arm/smmu', 'x86/amd', 'x86/vt-d' and 'core' into next

2020-01-24T14:39:39+00:00

iommu/arm-smmu-v3: Parse PASID devicetree property of platform devices

2020-01-15T16:00:57+00:00

For platform devices that support SubstreamID (SSID), firmware provides
the number of supported SSID bits. Restrict it to what the SMMU supports
and cache it into master->ssid_bits, which will also be used for PCI
PASID.

Reviewed-by: Eric Auger 
Reviewed-by: Jonathan Cameron 
Signed-off-by: Jean-Philippe Brucker 
Signed-off-by: Will Deacon

drivers/iommu: Initialise module 'owner' field in iommu_device_set_ops()

2020-01-10T09:49:13+00:00

Requiring each IOMMU driver to initialise the 'owner' field of their
'struct iommu_ops' is error-prone and easily forgotten. Follow the
example set by PCI and USB by assigning THIS_MODULE automatically when
registering the ops structure with IOMMU core.

Reviewed-by: Greg Kroah-Hartman 
Suggested-by: Greg Kroah-Hartman 
Signed-off-by: Will Deacon

iommu: Implement generic_iommu_put_resv_regions()

2019-12-23T13:07:03+00:00

Implement a generic function for removing reserved regions. This can be
used by drivers that don't do anything fancy with these regions other
than allocating memory for them.

Signed-off-by: Thierry Reding 
Signed-off-by: Joerg Roedel