Commit graph

12 commits

Author SHA1 Message Date
Joerg Roedel
1abb4ba596 Merge branches 'amd/fixes', 'debug/dma-api', 'arm/omap', 'arm/msm', 'core', 'iommu/fault-reporting' and 'api/iommu-ops-per-bus' into next
Conflicts:
	drivers/iommu/amd_iommu.c
	drivers/iommu/iommu.c
2011-10-21 14:38:55 +02:00
Joerg Roedel
94441c3bd9 iommu/core: Remove global iommu_ops and register_iommu
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 <joerg.roedel@amd.com>
2011-10-21 14:37:23 +02:00
Joerg Roedel
e5aa7f0077 iommu/core: Use bus->iommu_ops in the iommu-api
Use the per-bus iommu-ops in the functions of the iommu-api
instead of the global iommu_ops.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-10-21 14:37:21 +02:00
Joerg Roedel
a1b60c1cd9 iommu/core: Convert iommu_found to iommu_present
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 <joerg.roedel@amd.com>
2011-10-21 14:37:20 +02:00
Joerg Roedel
905d66c1e5 iommu/core: Add bus_type parameter to iommu_domain_alloc
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 <joerg.roedel@amd.com>
2011-10-21 14:37:19 +02:00
Joerg Roedel
ff21776d12 Driver core: Add iommu_ops to bus_type
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 <gregkh@suse.de>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-10-21 14:37:19 +02:00
Ohad Ben-Cohen
0ed6d2d27b iommu/core: let drivers know if an iommu fault handler isn't installed
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 <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-09-30 16:40:32 +02:00
Ohad Ben-Cohen
30bd918c71 iommu/core: export iommu_set_fault_handler()
commit 4f3f8d9 "iommu/core: Add fault reporting mechanism" added
the public iommu_set_fault_handler() symbol but forgot to export it.

Fix that.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-09-26 15:51:57 +02:00
Ohad Ben-Cohen
4f3f8d9db3 iommu/core: Add fault reporting mechanism
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 <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-09-14 15:35:36 +02:00
Joerg Roedel
85410340e0 iommu/core: Use PAGE_SIZE instead of hard-coded value
Replace the hard-coded 4kb by PAGE_SIZE to make iommu-api
implementations possible on architectures where
PAGE_SIZE != 4kb.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-09-06 14:36:17 +02:00
Ohad Ben-Cohen
4099818842 iommu/core: use the existing IS_ALIGNED macro
Replace iommu's alignment checks with the existing IS_ALIGNED macro,
to drop a few lines of code and utilize IS_ALIGNED's type safety.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-09-05 15:15:59 +02:00
Ohad Ben-Cohen
ab493a0f0f drivers: iommu: move to a dedicated folder
Create a dedicated folder for iommu drivers, and move the base
iommu implementation over there.

Grouping the various iommu drivers in a single location will help
finding similar problems shared by different platforms, so they
could be solved once, in the iommu framework, instead of solved
differently (or duplicated) in each driver.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-14 14:47:41 +02:00
Renamed from drivers/base/iommu.c (Browse further)