linux-toradex.git/include/linux/iommu.h, branch v4.4.93

iommu: Add generic_device_group() function

2015-10-21T22:00:49+00:00

This function can be used as a device_group call-back and
just allocates one iommu-group per device.

Signed-off-by: Joerg Roedel

iommu: Export and rename iommu_group_get_for_pci_dev()

2015-10-21T22:00:49+00:00

Rename that function to pci_device_group() and export it, so
that IOMMU drivers can use it as their device_group
call-back.

Signed-off-by: Joerg Roedel

iommu: Revive device_group iommu-ops call-back

2015-10-21T22:00:48+00:00

That call-back is currently unused, change it into a
call-back function for finding the right IOMMU group for a
device.
This is a first step to remove the hard-coded PCI dependency
in the iommu-group code.

Signed-off-by: Joerg Roedel

iommu: Implement common IOMMU ops for DMA mapping

2015-10-15T14:41:04+00:00

Taking inspiration from the existing arch/arm code, break out some
generic functions to interface the DMA-API to the IOMMU-API. This will
do the bulk of the heavy lifting for IOMMU-backed dma-mapping.

Since associating an IOVA allocator with an IOMMU domain is a fairly
common need, rather than introduce yet another private structure just to
do this for ourselves, extend the top-level struct iommu_domain with the
notion. A simple opaque cookie allows reuse by other IOMMU API users
with their various different incompatible allocator types.

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

include, lib: add __printf attributes to several function prototypes

2015-07-17T23:39:53+00:00

Using __printf attributes helps to detect several format string issues
at compile time (even though -Wformat-security is currently disabled in
Makefile).  For example it can detect when formatting a pointer as a
number, like the issue fixed in commit a3fa71c40f18 ("wl18xx: show
rx_frames_per_rates as an array as it really is"), or when the arguments
do not match the format string, c.f.  for example commit 5ce1aca81435
("reiserfs: fix __RASSERT format string").

To prevent similar bugs in the future, add a __printf attribute to every
function prototype which needs one in include/linux/ and lib/.  These
functions were mostly found by using gcc's -Wsuggest-attribute=format
flag.

Signed-off-by: Nicolas Iooss 
Cc: Greg Kroah-Hartman 
Cc: Felipe Balbi 
Cc: Joel Becker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

iommu: Introduce iommu_request_dm_for_dev()

2015-06-11T07:01:55+00:00

This function can be called by an IOMMU driver to request
that a device's default domain is direct mapped.

Signed-off-by: Joerg Roedel

iommu: Add function to query the default domain of a group

2015-06-09T06:55:24+00:00

This will be used to handle unity mappings in the iommu
drivers.

Signed-off-by: Joerg Roedel

iommu: Introduce direct mapped region handling

2015-06-09T06:55:23+00:00

Add two new functions to the IOMMU-API to allow the IOMMU
drivers to export the requirements for direct mapped regions
per device.
This is useful for exporting the information in Intel VT-d's
RMRR entries or AMD-Vi's unity mappings.

Signed-off-by: Joerg Roedel

iommu: Add iommu_get_domain_for_dev function

2015-06-09T06:55:23+00:00

This function can be used to request the current domain a
device is attached to.

Signed-off-by: Joerg Roedel

iommu: Remove domain_init and domain_free iommu_ops

2015-03-31T13:32:16+00:00

All drivers have been converted to the new domain_alloc and
domain_free iommu-ops. So remove the old ones and get rid of
iommu_domain->priv too, as this is no longer needed when the
struct iommu_domain is embedded in the private structures of
the iommu drivers.

Tested-by: Thierry Reding 
Tested-by: Heiko Stuebner 
Reviewed-by: Alex Williamson 
Acked-by: Will Deacon 
Signed-off-by: Joerg Roedel