linux-toradex.git/include/linux/iommu.h, branch v3.2.50

Merge branches 'amd/fixes', 'debug/dma-api', 'arm/omap', 'arm/msm', 'core', 'iommu/fault-reporting' and 'api/iommu-ops-per-bus' into next

2011-10-21T12:38:55+00:00

Conflicts:
	drivers/iommu/amd_iommu.c
	drivers/iommu/iommu.c

iommu/core: Remove global iommu_ops and register_iommu

2011-10-21T12:37:23+00:00

With all IOMMU drivers being converted to bus_set_iommu the
global iommu_ops are no longer required. The same is true
for the deprecated register_iommu function.

Signed-off-by: Joerg Roedel

iommu/core: Convert iommu_found to iommu_present

2011-10-21T12:37:20+00:00

With per-bus iommu_ops the iommu_found function needs to
work on a bus_type too. This patch adds a bus_type parameter
to that function and converts all call-places.
The function is also renamed to iommu_present because the
function now checks if an iommu is present for a given bus
and does not check for a global iommu anymore.

Signed-off-by: Joerg Roedel

iommu/core: Add bus_type parameter to iommu_domain_alloc

2011-10-21T12:37:19+00:00

This is necessary to store a pointer to the bus-specific
iommu_ops in the iommu-domain structure. It will be used
later to call into bus-specific iommu-ops.

Signed-off-by: Joerg Roedel

Driver core: Add iommu_ops to bus_type

2011-10-21T12:37:19+00:00

This is the starting point to make the iommu_ops used for
the iommu-api a per-bus-type structure. It is required to
easily implement bus-specific setup in the iommu-layer.
The first user will be the iommu-group attribute in sysfs.

Acked-by: Greg Kroah-Hartman 
Signed-off-by: Joerg Roedel

iommu/core: Define iommu_ops and register_iommu only with CONFIG_IOMMU_API

2011-10-21T12:37:18+00:00

This makes it impossible to compile an iommu driver into the
kernel without selecting CONFIG_IOMMU_API.

Signed-off-by: Joerg Roedel

iommu/core: let drivers know if an iommu fault handler isn't installed

2011-09-30T14:40:32+00:00

Make report_iommu_fault() return -ENOSYS whenever an iommu fault
handler isn't installed, so IOMMU drivers can then do their own
platform-specific default behavior if they wanted.

Fault handlers can still return -ENOSYS in case they want to elicit the
default behavior of the IOMMU drivers.

Signed-off-by: Ohad Ben-Cohen 
Signed-off-by: Joerg Roedel

iommu/core: Add fault reporting mechanism

2011-09-14T13:35:36+00:00

Add iommu fault report mechanism to the IOMMU API, so implementations
could report about mmu faults (translation errors, hardware errors,
etc..).

Fault reports can be used in several ways:
- mere logging
- reset the device that accessed the faulting address (may be necessary
  in case the device is a remote processor for example)
- implement dynamic PTE/TLB loading

A dedicated iommu_set_fault_handler() API has been added to allow
users, who are interested to receive such reports, to provide
their handler.

Signed-off-by: Ohad Ben-Cohen 
Signed-off-by: Joerg Roedel

iommu-api: Add missing header file

2011-06-14T09:30:22+00:00

If CONFIG_IOMMU_API is not defined some functions will just
return -ENODEV. Add errno.h for the definition of ENODEV.

Signed-off-by: Laura Abbott 
Signed-off-by: Joerg Roedel

iommu-api: Extension to check for interrupt remapping

2010-07-19T13:44:25+00:00

This patch allows IOMMU users to determine whether the
hardware and software support safe, isolated interrupt
remapping.  Not all Intel IOMMUs have the hardware, and the
software for AMD is not there yet.

Signed-off-by: Tom Lyon 
Signed-off-by: Joerg Roedel