Commit Graph

11 Commits

Author SHA1 Message Date
Steven L Kinney
30861ddc9c perf/x86/amd: Add IOMMU Performance Counter resource management
Add functionality to check the availability of the AMD IOMMU Performance
Counters and export this functionality to other core drivers, such as in this
case, a perf AMD IOMMU PMU.  This feature is not bound to any specific AMD
family/model other than the presence of the IOMMU with P-C enabled.

The AMD IOMMU P-C support static counting only at this time.

Signed-off-by: Steven Kinney <steven.kinney@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1370466709-3212-2-git-send-email-suravee.suthikulpanit@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-06-19 13:04:52 +02:00
Joerg Roedel
6b474b8224 iommu/amd: Add initialization routines for AMD interrupt remapping
Add the six routines required to setup interrupt remapping
with the AMD IOMMU. Also put it all together into the AMD
specific irq_remap_ops.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2012-09-28 17:43:52 +02:00
Joerg Roedel
f3572db823 iommu/amd: Add function to get IOMMUv2 domain for pdev
The AMD IOMMUv2 driver needs to get the IOMMUv2 domain
associated with a particular device. This patch adds a
function to get this information.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 15:19:05 +01:00
Joerg Roedel
c99afa25b6 iommu/amd: Implement function to send PPR completions
To send completions for PPR requests this patch adds a
function which can be used by the IOMMUv2 driver.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 15:19:05 +01:00
Joerg Roedel
b16137b11b iommu/amd: Implement functions to manage GCR3 table
This patch adds functions necessary to set and clear the
GCR3 values associated with a particular PASID in an IOMMUv2
domain.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 15:19:04 +01:00
Joerg Roedel
22e266c79b iommu/amd: Implement IOMMUv2 TLB flushing routines
The functions added with this patch allow to manage the
IOMMU and the device TLBs for all devices in an IOMMUv2
domain.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 15:19:03 +01:00
Joerg Roedel
52815b7568 iommu/amd: Add support for IOMMUv2 domain mode
This patch adds support for protection domains that
implement two-level paging for devices.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 15:18:57 +01:00
Joerg Roedel
132bd68f18 iommu/amd: Add amd_iommu_domain_direct_map function
This function can be used to switch a domain into
paging-mode 0. In this mode all devices can access physical
system memory directly without any remapping.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 14:55:13 +01:00
Joerg Roedel
72e1dcc419 iommu/amd: Implement notifier for PPR faults
Add a notifer at which a module can attach to get informed
about incoming PPR faults.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 14:55:04 +01:00
Joerg Roedel
400a28a05f iommu/amd: Add iommuv2 flag to struct amd_iommu
In mixed IOMMU setups this flag inidicates whether an IOMMU
supports the v2 features or not. This patch also adds a
global flag together with a function to query that flag from
other code. The flag shows if at least one IOMMUv2 is in the
system.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-12-12 14:54:52 +01:00
Joerg Roedel
403f81d8ee iommu/amd: Move missing parts to drivers/iommu
A few parts of the driver were missing in drivers/iommu.
Move them there to have the complete driver in that
directory.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2011-06-21 10:49:31 +02:00