linux.git/include/linux/iommu.h, branch v4.2-rc5

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

iommu: Introduce iommu domain types

2015-03-31T13:31:49+00:00

This allows to handle domains differently based on their
type in the future. An IOMMU driver can implement certain
optimizations for DMA-API domains for example.

The domain types can be extended later and some of the
existing domain attributes can be migrated to become domain
flags.

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

iommu: Introduce domain_alloc and domain_free iommu_ops

2015-03-31T13:31:23+00:00

These new call-backs defer the allocation and destruction of
'struct iommu_domain' to the iommu driver. This allows
drivers to embed this struct into their private domain
structures and to get rid of the domain_init and
domain_destroy call-backs when all drivers have been
converted.

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

Merge tag 'iommu-config-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2014-12-16T22:53:01+00:00

Pull ARM SoC/iommu configuration update from Arnd Bergmann:
 "The iomm-config branch contains work from Will Deacon, quoting his
  description:

    This series adds automatic IOMMU and DMA-mapping configuration for
    OF-based DMA masters described using the generic IOMMU devicetree
    bindings. Although there is plenty of future work around splitting up
    iommu_ops, adding default IOMMU domains and sorting out automatic IOMMU
    group creation for the platform_bus, this is already useful enough for
    people to port over their IOMMU drivers and start using the new probing
    infrastructure (indeed, Marek has patches queued for the Exynos IOMMU).

  The branch touches core ARM and IOMMU driver files, and the respective
  maintainers (Russell King and Joerg Roedel) agreed to have the
  contents merged through the arm-soc tree.

  The final version was ready just before the merge window, so we ended
  up delaying it a bit longer than the rest, but we don't expect to see
  regressions because this is just additional infrastructure that will
  get used in drivers starting in 3.20 but is unused so far"

* tag 'iommu-config-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  iommu: store DT-probed IOMMU data privately
  arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops
  arm: call iommu_init before of_platform_populate
  dma-mapping: detect and configure IOMMU in of_dma_configure
  iommu: fix initialization without 'add_device' callback
  iommu: provide helper function to configure an IOMMU for an of master
  iommu: add new iommu_ops callback for adding an OF device
  dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops
  iommu: provide early initialisation hook for IOMMU drivers

Merge branches 'arm/omap', 'arm/msm', 'arm/rockchip', 'arm/renesas', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next

2014-12-02T12:07:13+00:00

Conflicts:
	drivers/iommu/arm-smmu.c