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| author | Gaurav Batra <gbatra@linux.ibm.com> | 2025-01-08 10:48:14 -0600 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-02-11 11:38:41 +0530 |
| commit | 67dfc11982f7e3c37f0977e74671da2391b29181 (patch) | |
| tree | 410c3d59f3f6b81693fe812f889bfa94bd14b93b /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | ddcb883fd49c5d81f0d6e8c60332bab5d3b4c86f (diff) | |
powerpc/pseries/iommu: create DDW for devices with DMA mask less than 64-bits
Starting with PAPR level 2.13, platform supports placing PHB in limited
address mode. Devices that support DMA masks less that 64-bit but greater
than 32-bits are placed in limited address mode. In this mode, the
starting DMA address returned by the DDW is 4GB.
When the device driver calls dma_supported, with mask less then 64-bit, the
PowerPC IOMMU driver places PHB in the Limited Addressing Mode before
creating DDW.
Signed-off-by: Gaurav Batra <gbatra@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250108164814.73250-1-gbatra@linux.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions