linux-toradex.git/include/linux/iommu.h, branch v3.12.45

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

iommu/fsl: Make iova dma_addr_t in the iommu_iova_to_phys API.

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

This is required in case of PAMU, as it can support a window size of up
to 64G (even on 32bit).

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

iommu: Add DOMAIN_ATTR_WINDOWS domain attribute

2013-02-06T09:47:28+00:00

This attribute can be used to set and get the number of
subwindows on IOMMUs that are window-based.

Signed-off-by: Joerg Roedel

iommu: Add domain window handling functions

2013-02-06T09:47:22+00:00

Add the iommu_domain_window_enable() and iommu_domain_window_disable()
functions to the IOMMU-API. These functions will be used to setup
domains that are based on subwindows and not on paging.

Signed-off-by: Joerg Roedel

iommu: Implement DOMAIN_ATTR_PAGING attribute

2013-02-06T09:47:11+00:00

This attribute of a domain can be queried to find out if the
domain supports setting up page-tables using the iommu_map()
and iommu_unmap() functions.

Signed-off-by: Joerg Roedel

iommu: Make sure DOMAIN_ATTR_MAX is really the maximum

2013-02-06T09:46:53+00:00

Move it to the end of the list.

Signed-off-by: Joerg Roedel