linux-toradex.git/include/linux/iommu.h, branch v3.14.3

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

2014-01-09T12:06:59+00:00

iommu: Rename domain_has_cap to iommu_domain_has_cap

2014-01-07T14:31:59+00:00

domain_has_cap is a misnomer bc the func name should be
the same for CONFIG_IOMMU_API and !CONFIG_IOMMU_API.

Signed-off-by: Upinder Malhi 
Signed-off-by: Joerg Roedel

iommu: Add empty stub for iommu_group_get_by_id()

2013-12-30T14:17:31+00:00

Almost every function in include/linux/iommu.h has an empty stub
but the iommu_group_get_by_id() did not get one by mistake.

This adds an empty stub for iommu_group_get_by_id() for IOMMU_API
disabled config.

Signed-off-by: Alexey Kardashevskiy 
Signed-off-by: Joerg Roedel

iommu: add IOMMU_EXEC flag for safely allowing XN mappings

2013-12-16T19:30:31+00:00

Whilst most IOMMU mappings should probably be non-executable, there
may be cases (HSA?) where executable mappings are required.

This patch introduces a new mapping flag, IOMMU_EXEC, to indicate that
the mapping should be mapped as executable.

Signed-off-by: Will Deacon

iommu: Change iommu driver to call io_page_fault trace event

2013-09-25T09:07:04+00:00

Change iommu driver call io_page_fault trace event. This iommu_error class
event can be enabled to trigger when an iommu error occurs. Trace information
includes driver name, device name, iova, and flags.

Testing:
Added trace calls to iommu_prepare_identity_map() for testing some of the
conditions that are hard to trigger. Here is the trace from the testing:

       swapper/0-1     [003] ....     2.003774: io_page_fault: IOMMU:pci 0000:00:02.0 iova=0x00000000cb800000 flags=0x0002
       swapper/0-1     [003] ....     2.004098: io_page_fault: IOMMU:pci 0000:00:1d.0 iova=0x00000000cadc6000 flags=0x0002
       swapper/0-1     [003] ....     2.004115: io_page_fault: IOMMU:pci 0000:00:1a.0 iova=0x00000000cadc6000 flags=0x0002
       swapper/0-1     [003] ....     2.004129: io_page_fault: IOMMU:pci 0000:00:1f.0 iova=0x0000000000000000 flags=0x0002

Signed-off-by: Shuah Khan 
Signed-off-by: Joerg Roedel

iommu/fsl: Add additional iommu attributes required by the PAMU driver.

2013-08-14T09:38:34+00:00

Added the following domain attributes for the FSL PAMU driver:
1. Added new iommu stash attribute, which allows setting of the
   LIODN specific stash id parameter through IOMMU API.
2. Added an attribute for enabling/disabling DMA to a particular
   memory window.
3. Added domain attribute to check for PAMUV1 specific constraints.

Signed-off-by: Varun Sethi 
Signed-off-by: Joerg Roedel

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

2013-05-02T10:10:19+00:00

iommu: Add a function to find an iommu group by id

2013-04-24T17:56:51+00:00

As IOMMU groups are exposed to the user space by their numbers,
the user space can use them in various kernel APIs so the kernel
might need an API to find a group by its ID.

As an example, QEMU VFIO on PPC64 platform needs it to associate
a logical bus number (LIOBN) with a specific IOMMU group in order
to support in-kernel handling of DMA map/unmap requests.

The patch adds the iommu_group_get_by_id(id) function which performs
such search.

v2: fixed reference counting.

Signed-off-by: Alexey Kardashevskiy 
Acked-by: Alex Williamson 
Signed-off-by: Joerg Roedel

iommu: Include linux/err.h

2013-04-19T19:05:10+00:00

The linux/iommu.h header uses ERR_PTR defined
in linux/err.h but doesn't include it.

Cc:joro@8bytes.org
Reviewed-by: Alex Williamson 
Signed-off-by: Wang YanQing 
Signed-off-by: Joerg Roedel

iommu/fsl: Add the window permission flag as a parameter to iommu_window_enable API.

2013-04-02T16:20:53+00:00

Each iommu window can have access permissions associated with it. Extended the
window_enable API to incorporate window access permissions.

In case of PAMU each window can have its specific set of permissions.

Signed-off-by: Varun Sethi 
Signed-off-by: Joerg Roedel